CVE-2026-39835 (GCVE-0-2026-39835)

Vulnerability from cvelistv5 – Published: 2026-05-22 02:31 – Updated: 2026-07-03 12:05
VLAI
Title
Invoking server panic during CheckHostKey/Authenticate in golang.org/x/crypto/ssh
Summary
SSH servers which use CertChecker as a public key callback without setting IsUserAuthority or IsHostAuthority could be caused to panic by a client presenting a certificate. CertChecker now returns an error instead of panicking when these callbacks are nil.
Severity
5.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-476 - NULL Pointer Dereference
Assigner
Go
References
Impacted products
Vendor Product Version
golang.org/x/crypto golang.org/x/crypto/ssh Affected: 0 , < 0.52.0 (semver)
Create a notification for this product.
Red Hat Red Hat Advanced Cluster Security for Kubernetes 4.10     cpe:/a:redhat:advanced_cluster_security:4.10::el8
 Create a notification for this product.
Red Hat Red Hat Advanced Cluster Security for Kubernetes 4.9     cpe:/a:redhat:advanced_cluster_security:4.9::el8
 Create a notification for this product.
Red Hat Assisted Installer for Red Hat OpenShift Container Platform 2     cpe:/a:redhat:assisted_installer:2
 Create a notification for this product.
Red Hat Builds for Red Hat OpenShift     cpe:/a:redhat:openshift_builds:1
 Create a notification for this product.
Red Hat cert-manager Operator for Red Hat OpenShift     cpe:/a:redhat:cert_manager:1
 Create a notification for this product.
Red Hat Confidential Compute Attestation     cpe:/a:redhat:confidential_compute_attestation:1
 Create a notification for this product.
Red Hat Cryostat 4     cpe:/a:redhat:cryostat:4
 Create a notification for this product.
Red Hat External Secrets Operator for Red Hat OpenShift     cpe:/a:redhat:external_secrets_operator:1
 Create a notification for this product.
Red Hat Multicluster Engine for Kubernetes     cpe:/a:redhat:multicluster_engine
 Create a notification for this product.
Red Hat OpenShift API for Data Protection     cpe:/a:redhat:openshift_api_data_protection:1
 Create a notification for this product.
Red Hat OpenShift Pipelines     cpe:/a:redhat:openshift_pipelines:1
 Create a notification for this product.
Red Hat OpenShift Serverless     cpe:/a:redhat:serverless:1
 Create a notification for this product.
Red Hat Red Hat Advanced Cluster Management for Kubernetes 2     cpe:/a:redhat:acm:2
 Create a notification for this product.
Red Hat Red Hat Advanced Cluster Security 4     cpe:/a:redhat:advanced_cluster_security:4
 Create a notification for this product.
Red Hat Red Hat Ceph Storage 9     cpe:/a:redhat:ceph_storage:9
 Create a notification for this product.
Red Hat Red Hat Edge Manager 1     cpe:/a:redhat:edge_manager:1
 Create a notification for this product.
Red Hat Red Hat Enterprise Linux 10     cpe:/o:redhat:enterprise_linux:10
 Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8     cpe:/o:redhat:enterprise_linux:8
 Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9     cpe:/o:redhat:enterprise_linux:9
 Create a notification for this product.
Red Hat Red Hat OpenShift AI (RHOAI)     cpe:/a:redhat:openshift_ai
 Create a notification for this product.
Red Hat Red Hat OpenShift Container Platform 4     cpe:/a:redhat:openshift:4
 Create a notification for this product.
Red Hat Red Hat OpenShift Dev Spaces     cpe:/a:redhat:openshift_devspaces:3
 Create a notification for this product.
Red Hat Red Hat OpenShift Dev Workspaces Operator     cpe:/a:redhat:devworkspace
 Create a notification for this product.
Red Hat Red Hat OpenShift for Windows Containers     cpe:/a:redhat:windows_machine_config
 Create a notification for this product.
Red Hat Red Hat OpenShift GitOps     cpe:/a:redhat:openshift_gitops:1
 Create a notification for this product.
Red Hat Red Hat OpenShift on AWS     cpe:/a:redhat:openshift_service_on_aws:1
 Create a notification for this product.
Red Hat Red Hat OpenShift Virtualization 4     cpe:/a:redhat:container_native_virtualization:4
 Create a notification for this product.
Red Hat Red Hat OpenStack Platform 16.2     cpe:/a:redhat:openstack:16.2
 Create a notification for this product.
Red Hat Red Hat Quay 3     cpe:/a:redhat:quay:3
 Create a notification for this product.
Red Hat Red Hat Trusted Artifact Signer     cpe:/a:redhat:trusted_artifact_signer:1
 Create a notification for this product.
Red Hat Security Profiles Operator     cpe:/a:redhat:openshift_security_profiles_operator:1
 Create a notification for this product.
Red Hat Zero Trust Workload Identity Manager     cpe:/a:redhat:zero_trust_workload_identity_manager:1
 Create a notification for this product.
Red Hat Zero Trust Workload Identity Manager - Tech Preview     cpe:/a:redhat:zero_trust_workload_identity_manager:0
 Create a notification for this product.
Red Hat Red Hat Openshift Data Foundation 4     cpe:/a:redhat:openshift_data_foundation:4
 Create a notification for this product.
Red Hat Red Hat OpenStack Platform 17.1     cpe:/a:redhat:openstack:17.1
 Create a notification for this product.
Red Hat Red Hat OpenStack Platform 18.0     cpe:/a:redhat:openstack:18.0
 Create a notification for this product.
Credits
NCC Group Cryptography Services, sponsored by Teleport
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "LOW",
              "baseScore": 5.3,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "NONE",
              "integrityImpact": "NONE",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2026-39835",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-05-22T17:44:50.320380Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-05-22T17:45:10.853Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "affected": [
          {
            "cpes": [
              "cpe:/a:redhat:advanced_cluster_security:4.10::el8"
            ],
            "defaultStatus": "affected",
            "product": "Red Hat Advanced Cluster Security for Kubernetes 4.10",
            "vendor": "Red Hat"
          },
          {
            "cpes": [
              "cpe:/a:redhat:advanced_cluster_security:4.9::el8"
            ],
            "defaultStatus": "affected",
            "product": "Red Hat Advanced Cluster Security for Kubernetes 4.9",
            "vendor": "Red Hat"
          },
          {
            "cpes": [
              "cpe:/a:redhat:assisted_installer:2"
            ],
            "defaultStatus": "affected",
            "product": "Assisted Installer for Red Hat OpenShift Container Platform 2",
            "vendor": "Red Hat"
          },
          {
            "cpes": [
              "cpe:/a:redhat:openshift_builds:1"
            ],
            "defaultStatus": "affected",
            "product": "Builds for Red Hat OpenShift",
            "vendor": "Red Hat"
          },
          {
            "cpes": [
              "cpe:/a:redhat:cert_manager:1"
            ],
            "defaultStatus": "affected",
            "product": "cert-manager Operator for Red Hat OpenShift",
            "vendor": "Red Hat"
          },
          {
            "cpes": [
              "cpe:/a:redhat:confidential_compute_attestation:1"
            ],
            "defaultStatus": "affected",
            "product": "Confidential Compute Attestation",
            "vendor": "Red Hat"
          },
          {
            "cpes": [
              "cpe:/a:redhat:cryostat:4"
            ],
            "defaultStatus": "affected",
            "product": "Cryostat 4",
            "vendor": "Red Hat"
          },
          {
            "cpes": [
              "cpe:/a:redhat:external_secrets_operator:1"
            ],
            "defaultStatus": "affected",
            "product": "External Secrets Operator for Red Hat OpenShift",
            "vendor": "Red Hat"
          },
          {
            "cpes": [
              "cpe:/a:redhat:multicluster_engine"
            ],
            "defaultStatus": "affected",
            "product": "Multicluster Engine for Kubernetes",
            "vendor": "Red Hat"
          },
          {
            "cpes": [
              "cpe:/a:redhat:openshift_api_data_protection:1"
            ],
            "defaultStatus": "affected",
            "product": "OpenShift API for Data Protection",
            "vendor": "Red Hat"
          },
          {
            "cpes": [
              "cpe:/a:redhat:openshift_pipelines:1"
            ],
            "defaultStatus": "affected",
            "product": "OpenShift Pipelines",
            "vendor": "Red Hat"
          },
          {
            "cpes": [
              "cpe:/a:redhat:serverless:1"
            ],
            "defaultStatus": "affected",
            "product": "OpenShift Serverless",
            "vendor": "Red Hat"
          },
          {
            "cpes": [
              "cpe:/a:redhat:acm:2"
            ],
            "defaultStatus": "affected",
            "product": "Red Hat Advanced Cluster Management for Kubernetes 2",
            "vendor": "Red Hat"
          },
          {
            "cpes": [
              "cpe:/a:redhat:advanced_cluster_security:4"
            ],
            "defaultStatus": "affected",
            "product": "Red Hat Advanced Cluster Security 4",
            "vendor": "Red Hat"
          },
          {
            "cpes": [
              "cpe:/a:redhat:ceph_storage:9"
            ],
            "defaultStatus": "affected",
            "product": "Red Hat Ceph Storage 9",
            "vendor": "Red Hat"
          },
          {
            "cpes": [
              "cpe:/a:redhat:edge_manager:1"
            ],
            "defaultStatus": "affected",
            "product": "Red Hat Edge Manager 1",
            "vendor": "Red Hat"
          },
          {
            "cpes": [
              "cpe:/o:redhat:enterprise_linux:10"
            ],
            "defaultStatus": "affected",
            "product": "Red Hat Enterprise Linux 10",
            "vendor": "Red Hat"
          },
          {
            "cpes": [
              "cpe:/o:redhat:enterprise_linux:8"
            ],
            "defaultStatus": "affected",
            "product": "Red Hat Enterprise Linux 8",
            "vendor": "Red Hat"
          },
          {
            "cpes": [
              "cpe:/o:redhat:enterprise_linux:9"
            ],
            "defaultStatus": "affected",
            "product": "Red Hat Enterprise Linux 9",
            "vendor": "Red Hat"
          },
          {
            "cpes": [
              "cpe:/a:redhat:openshift_ai"
            ],
            "defaultStatus": "affected",
            "product": "Red Hat OpenShift AI (RHOAI)",
            "vendor": "Red Hat"
          },
          {
            "cpes": [
              "cpe:/a:redhat:openshift:4"
            ],
            "defaultStatus": "affected",
            "product": "Red Hat OpenShift Container Platform 4",
            "vendor": "Red Hat"
          },
          {
            "cpes": [
              "cpe:/a:redhat:openshift_devspaces:3"
            ],
            "defaultStatus": "affected",
            "product": "Red Hat OpenShift Dev Spaces",
            "vendor": "Red Hat"
          },
          {
            "cpes": [
              "cpe:/a:redhat:devworkspace"
            ],
            "defaultStatus": "affected",
            "product": "Red Hat OpenShift Dev Workspaces Operator",
            "vendor": "Red Hat"
          },
          {
            "cpes": [
              "cpe:/a:redhat:windows_machine_config"
            ],
            "defaultStatus": "affected",
            "product": "Red Hat OpenShift for Windows Containers",
            "vendor": "Red Hat"
          },
          {
            "cpes": [
              "cpe:/a:redhat:openshift_gitops:1"
            ],
            "defaultStatus": "affected",
            "product": "Red Hat OpenShift GitOps",
            "vendor": "Red Hat"
          },
          {
            "cpes": [
              "cpe:/a:redhat:openshift_service_on_aws:1"
            ],
            "defaultStatus": "affected",
            "product": "Red Hat OpenShift on AWS",
            "vendor": "Red Hat"
          },
          {
            "cpes": [
              "cpe:/a:redhat:container_native_virtualization:4"
            ],
            "defaultStatus": "affected",
            "product": "Red Hat OpenShift Virtualization 4",
            "vendor": "Red Hat"
          },
          {
            "cpes": [
              "cpe:/a:redhat:openstack:16.2"
            ],
            "defaultStatus": "affected",
            "product": "Red Hat OpenStack Platform 16.2",
            "vendor": "Red Hat"
          },
          {
            "cpes": [
              "cpe:/a:redhat:quay:3"
            ],
            "defaultStatus": "affected",
            "product": "Red Hat Quay 3",
            "vendor": "Red Hat"
          },
          {
            "cpes": [
              "cpe:/a:redhat:trusted_artifact_signer:1"
            ],
            "defaultStatus": "affected",
            "product": "Red Hat Trusted Artifact Signer",
            "vendor": "Red Hat"
          },
          {
            "cpes": [
              "cpe:/a:redhat:openshift_security_profiles_operator:1"
            ],
            "defaultStatus": "affected",
            "product": "Security Profiles Operator",
            "vendor": "Red Hat"
          },
          {
            "cpes": [
              "cpe:/a:redhat:zero_trust_workload_identity_manager:1"
            ],
            "defaultStatus": "affected",
            "product": "Zero Trust Workload Identity Manager",
            "vendor": "Red Hat"
          },
          {
            "cpes": [
              "cpe:/a:redhat:zero_trust_workload_identity_manager:0"
            ],
            "defaultStatus": "affected",
            "product": "Zero Trust Workload Identity Manager - Tech Preview",
            "vendor": "Red Hat"
          },
          {
            "cpes": [
              "cpe:/a:redhat:openshift_data_foundation:4"
            ],
            "defaultStatus": "unaffected",
            "product": "Red Hat Openshift Data Foundation 4",
            "vendor": "Red Hat"
          },
          {
            "cpes": [
              "cpe:/a:redhat:openstack:17.1"
            ],
            "defaultStatus": "unaffected",
            "product": "Red Hat OpenStack Platform 17.1",
            "vendor": "Red Hat"
          },
          {
            "cpes": [
              "cpe:/a:redhat:openstack:18.0"
            ],
            "defaultStatus": "unaffected",
            "product": "Red Hat OpenStack Platform 18.0",
            "vendor": "Red Hat"
          }
        ],
        "datePublic": "2026-05-22T02:31:26.982Z",
        "descriptions": [
          {
            "lang": "en",
            "value": "A flaw was found in golang.org/x/crypto/ssh. SSH servers configured to use CertChecker as a public key callback, without explicitly setting IsUserAuthority or IsHostAuthority, are vulnerable. A remote attacker can exploit this by presenting a specially crafted certificate, causing the server to panic and resulting in a Denial of Service (DoS)."
          }
        ],
        "metrics": [
          {
            "other": {
              "content": {
                "namespace": "https://access.redhat.com/security/updates/classification/",
                "value": "Important"
              },
              "type": "Red Hat severity rating"
            }
          },
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "HIGH",
              "baseScore": 7.5,
              "baseSeverity": "HIGH",
              "confidentialityImpact": "NONE",
              "integrityImpact": "NONE",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
              "version": "3.1"
            },
            "format": "CVSS"
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-476",
                "description": "NULL Pointer Dereference",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-07-03T12:05:01.812Z",
          "orgId": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
          "shortName": "redhat-SADP"
        },
        "references": [
          {
            "tags": [
              "vdb-entry",
              "x_refsource_REDHAT"
            ],
            "url": "https://access.redhat.com/security/cve/CVE-2026-39835"
          },
          {
            "name": "RHBZ#2480680",
            "tags": [
              "issue-tracking",
              "x_refsource_REDHAT"
            ],
            "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2480680"
          },
          {
            "tags": [
              "x_sadp-csaf-vex"
            ],
            "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-39835.json"
          },
          {
            "tags": [
              "vendor-advisory",
              "x_refsource_REDHAT"
            ],
            "url": "https://access.redhat.com/errata/RHSA-2026:26547"
          },
          {
            "tags": [
              "vendor-advisory",
              "x_refsource_REDHAT"
            ],
            "url": "https://access.redhat.com/errata/RHSA-2026:26546"
          }
        ],
        "solutions": [
          {
            "lang": "en",
            "value": "RHSA-2026:26547: Red Hat Advanced Cluster Security for Kubernetes 4.10"
          },
          {
            "lang": "en",
            "value": "RHSA-2026:26546: Red Hat Advanced Cluster Security for Kubernetes 4.9"
          }
        ],
        "timeline": [
          {
            "lang": "en",
            "time": "2026-05-22T04:01:27.279Z",
            "value": "Reported to Red Hat."
          },
          {
            "lang": "en",
            "time": "2026-05-22T02:31:26.982Z",
            "value": "Made public."
          }
        ],
        "title": "golang.org/x/crypto/ssh: golang: golang.org/x/crypto/ssh: Denial of Service via crafted SSH certificate",
        "workarounds": [
          {
            "lang": "en",
            "value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability."
          }
        ],
        "x_adpType": "supplier",
        "x_generator": {
          "engine": "sadp-cli 1.0.0"
        }
      }
    ],
    "cna": {
      "affected": [
        {
          "collectionURL": "https://pkg.go.dev",
          "defaultStatus": "unaffected",
          "packageName": "golang.org/x/crypto/ssh",
          "product": "golang.org/x/crypto/ssh",
          "programRoutines": [
            {
              "name": "CertChecker.CheckHostKey"
            },
            {
              "name": "CertChecker.Authenticate"
            }
          ],
          "vendor": "golang.org/x/crypto",
          "versions": [
            {
              "lessThan": "0.52.0",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "NCC Group Cryptography Services, sponsored by Teleport"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "SSH servers which use CertChecker as a public key callback without setting IsUserAuthority or IsHostAuthority could be caused to panic by a client presenting a certificate. CertChecker now returns an error instead of panicking when these callbacks are nil."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "CWE-476: NULL Pointer Dereference",
              "lang": "en"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-22T02:31:26.982Z",
        "orgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
        "shortName": "Go"
      },
      "references": [
        {
          "url": "https://go.dev/issue/79563"
        },
        {
          "url": "https://groups.google.com/g/golang-announce/c/a082jnz-LvI"
        },
        {
          "url": "https://go.dev/cl/781660"
        },
        {
          "url": "https://pkg.go.dev/vuln/GO-2026-5015"
        }
      ],
      "title": "Invoking  server panic during CheckHostKey/Authenticate in golang.org/x/crypto/ssh"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
    "assignerShortName": "Go",
    "cveId": "CVE-2026-39835",
    "datePublished": "2026-05-22T02:31:26.982Z",
    "dateReserved": "2026-04-07T18:13:03.529Z",
    "dateUpdated": "2026-07-03T12:05:01.812Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-39835",
      "date": "2026-07-03",
      "epss": "0.00369",
      "percentile": "0.28875"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-39835\",\"sourceIdentifier\":\"security@golang.org\",\"published\":\"2026-05-22T04:16:24.530\",\"lastModified\":\"2026-07-03T13:17:09.077\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"SSH servers which use CertChecker as a public key callback without setting IsUserAuthority or IsHostAuthority could be caused to panic by a client presenting a certificate. CertChecker now returns an error instead of panicking when these callbacks are nil.\"}],\"affected\":[{\"source\":\"security@golang.org\",\"affectedData\":[{\"vendor\":\"golang.org/x/crypto\",\"product\":\"golang.org/x/crypto/ssh\",\"defaultStatus\":\"unaffected\",\"collectionURL\":\"https://pkg.go.dev\",\"packageName\":\"golang.org/x/crypto/ssh\",\"programRoutines\":[{\"name\":\"CertChecker.CheckHostKey\"},{\"name\":\"CertChecker.Authenticate\"}],\"versions\":[{\"version\":\"0\",\"lessThan\":\"0.52.0\",\"versionType\":\"semver\",\"status\":\"affected\"}]}]},{\"source\":\"0b0ca135-0b70-47e7-9f44-1890c2a1c46c\",\"affectedData\":[{\"vendor\":\"Red Hat\",\"product\":\"Red Hat Advanced Cluster Security for Kubernetes 4.10\",\"defaultStatus\":\"affected\",\"cpes\":[\"cpe:/a:redhat:advanced_cluster_security:4.10::el8\"]},{\"vendor\":\"Red Hat\",\"product\":\"Red Hat Advanced Cluster Security for Kubernetes 4.9\",\"defaultStatus\":\"affected\",\"cpes\":[\"cpe:/a:redhat:advanced_cluster_security:4.9::el8\"]},{\"vendor\":\"Red Hat\",\"product\":\"Assisted Installer for Red Hat OpenShift Container Platform 2\",\"defaultStatus\":\"affected\",\"cpes\":[\"cpe:/a:redhat:assisted_installer:2\"]},{\"vendor\":\"Red Hat\",\"product\":\"Builds for Red Hat OpenShift\",\"defaultStatus\":\"affected\",\"cpes\":[\"cpe:/a:redhat:openshift_builds:1\"]},{\"vendor\":\"Red Hat\",\"product\":\"cert-manager Operator for Red Hat OpenShift\",\"defaultStatus\":\"affected\",\"cpes\":[\"cpe:/a:redhat:cert_manager:1\"]},{\"vendor\":\"Red Hat\",\"product\":\"Confidential Compute Attestation\",\"defaultStatus\":\"affected\",\"cpes\":[\"cpe:/a:redhat:confidential_compute_attestation:1\"]},{\"vendor\":\"Red Hat\",\"product\":\"Cryostat 4\",\"defaultStatus\":\"affected\",\"cpes\":[\"cpe:/a:redhat:cryostat:4\"]},{\"vendor\":\"Red Hat\",\"product\":\"External Secrets Operator for Red Hat OpenShift\",\"defaultStatus\":\"affected\",\"cpes\":[\"cpe:/a:redhat:external_secrets_operator:1\"]},{\"vendor\":\"Red Hat\",\"product\":\"Multicluster Engine for Kubernetes\",\"defaultStatus\":\"affected\",\"cpes\":[\"cpe:/a:redhat:multicluster_engine\"]},{\"vendor\":\"Red Hat\",\"product\":\"OpenShift API for Data Protection\",\"defaultStatus\":\"affected\",\"cpes\":[\"cpe:/a:redhat:openshift_api_data_protection:1\"]},{\"vendor\":\"Red Hat\",\"product\":\"OpenShift Pipelines\",\"defaultStatus\":\"affected\",\"cpes\":[\"cpe:/a:redhat:openshift_pipelines:1\"]},{\"vendor\":\"Red Hat\",\"product\":\"OpenShift Serverless\",\"defaultStatus\":\"affected\",\"cpes\":[\"cpe:/a:redhat:serverless:1\"]},{\"vendor\":\"Red Hat\",\"product\":\"Red Hat Advanced Cluster Management for Kubernetes 2\",\"defaultStatus\":\"affected\",\"cpes\":[\"cpe:/a:redhat:acm:2\"]},{\"vendor\":\"Red Hat\",\"product\":\"Red Hat Advanced Cluster Security 4\",\"defaultStatus\":\"affected\",\"cpes\":[\"cpe:/a:redhat:advanced_cluster_security:4\"]},{\"vendor\":\"Red Hat\",\"product\":\"Red Hat Ceph Storage 9\",\"defaultStatus\":\"affected\",\"cpes\":[\"cpe:/a:redhat:ceph_storage:9\"]},{\"vendor\":\"Red Hat\",\"product\":\"Red Hat Edge Manager 1\",\"defaultStatus\":\"affected\",\"cpes\":[\"cpe:/a:redhat:edge_manager:1\"]},{\"vendor\":\"Red Hat\",\"product\":\"Red Hat Enterprise Linux 10\",\"defaultStatus\":\"affected\",\"cpes\":[\"cpe:/o:redhat:enterprise_linux:10\"]},{\"vendor\":\"Red Hat\",\"product\":\"Red Hat Enterprise Linux 8\",\"defaultStatus\":\"affected\",\"cpes\":[\"cpe:/o:redhat:enterprise_linux:8\"]},{\"vendor\":\"Red Hat\",\"product\":\"Red Hat Enterprise Linux 9\",\"defaultStatus\":\"affected\",\"cpes\":[\"cpe:/o:redhat:enterprise_linux:9\"]},{\"vendor\":\"Red Hat\",\"product\":\"Red Hat OpenShift AI (RHOAI)\",\"defaultStatus\":\"affected\",\"cpes\":[\"cpe:/a:redhat:openshift_ai\"]},{\"vendor\":\"Red Hat\",\"product\":\"Red Hat OpenShift Container Platform 4\",\"defaultStatus\":\"affected\",\"cpes\":[\"cpe:/a:redhat:openshift:4\"]},{\"vendor\":\"Red Hat\",\"product\":\"Red Hat OpenShift Dev Spaces\",\"defaultStatus\":\"affected\",\"cpes\":[\"cpe:/a:redhat:openshift_devspaces:3\"]},{\"vendor\":\"Red Hat\",\"product\":\"Red Hat OpenShift Dev Workspaces Operator\",\"defaultStatus\":\"affected\",\"cpes\":[\"cpe:/a:redhat:devworkspace\"]},{\"vendor\":\"Red Hat\",\"product\":\"Red Hat OpenShift for Windows Containers\",\"defaultStatus\":\"affected\",\"cpes\":[\"cpe:/a:redhat:windows_machine_config\"]},{\"vendor\":\"Red Hat\",\"product\":\"Red Hat OpenShift GitOps\",\"defaultStatus\":\"affected\",\"cpes\":[\"cpe:/a:redhat:openshift_gitops:1\"]},{\"vendor\":\"Red Hat\",\"product\":\"Red Hat OpenShift on AWS\",\"defaultStatus\":\"affected\",\"cpes\":[\"cpe:/a:redhat:openshift_service_on_aws:1\"]},{\"vendor\":\"Red Hat\",\"product\":\"Red Hat OpenShift Virtualization 4\",\"defaultStatus\":\"affected\",\"cpes\":[\"cpe:/a:redhat:container_native_virtualization:4\"]},{\"vendor\":\"Red Hat\",\"product\":\"Red Hat OpenStack Platform 16.2\",\"defaultStatus\":\"affected\",\"cpes\":[\"cpe:/a:redhat:openstack:16.2\"]},{\"vendor\":\"Red Hat\",\"product\":\"Red Hat Quay 3\",\"defaultStatus\":\"affected\",\"cpes\":[\"cpe:/a:redhat:quay:3\"]},{\"vendor\":\"Red Hat\",\"product\":\"Red Hat Trusted Artifact Signer\",\"defaultStatus\":\"affected\",\"cpes\":[\"cpe:/a:redhat:trusted_artifact_signer:1\"]},{\"vendor\":\"Red Hat\",\"product\":\"Security Profiles Operator\",\"defaultStatus\":\"affected\",\"cpes\":[\"cpe:/a:redhat:openshift_security_profiles_operator:1\"]},{\"vendor\":\"Red Hat\",\"product\":\"Zero Trust Workload Identity Manager\",\"defaultStatus\":\"affected\",\"cpes\":[\"cpe:/a:redhat:zero_trust_workload_identity_manager:1\"]},{\"vendor\":\"Red Hat\",\"product\":\"Zero Trust Workload Identity Manager - Tech Preview\",\"defaultStatus\":\"affected\",\"cpes\":[\"cpe:/a:redhat:zero_trust_workload_identity_manager:0\"]},{\"vendor\":\"Red Hat\",\"product\":\"Red Hat Openshift Data Foundation 4\",\"defaultStatus\":\"unaffected\",\"cpes\":[\"cpe:/a:redhat:openshift_data_foundation:4\"]},{\"vendor\":\"Red Hat\",\"product\":\"Red Hat OpenStack Platform 17.1\",\"defaultStatus\":\"unaffected\",\"cpes\":[\"cpe:/a:redhat:openstack:17.1\"]},{\"vendor\":\"Red Hat\",\"product\":\"Red Hat OpenStack Platform 18.0\",\"defaultStatus\":\"unaffected\",\"cpes\":[\"cpe:/a:redhat:openstack:18.0\"]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L\",\"baseScore\":5.3,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"LOW\"},\"exploitabilityScore\":3.9,\"impactScore\":1.4},{\"source\":\"0b0ca135-0b70-47e7-9f44-1890c2a1c46c\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":7.5,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":3.9,\"impactScore\":3.6}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2026-05-22T17:44:50.320380Z\",\"id\":\"CVE-2026-39835\",\"options\":[{\"exploitation\":\"none\"},{\"automatable\":\"no\"},{\"technicalImpact\":\"partial\"}],\"role\":\"CISA Coordinator\",\"version\":\"2.0.3\"}}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-295\"}]},{\"source\":\"0b0ca135-0b70-47e7-9f44-1890c2a1c46c\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-476\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:golang:crypto:*:*:*:*:*:go:*:*\",\"versionEndExcluding\":\"0.52.0\",\"matchCriteriaId\":\"D540395B-31B8-4B07-8F79-F5C631BBD5C8\"}]}]}],\"references\":[{\"url\":\"https://go.dev/cl/781660\",\"source\":\"security@golang.org\",\"tags\":[\"Issue Tracking\"]},{\"url\":\"https://go.dev/issue/79563\",\"source\":\"security@golang.org\",\"tags\":[\"Issue Tracking\"]},{\"url\":\"https://groups.google.com/g/golang-announce/c/a082jnz-LvI\",\"source\":\"security@golang.org\",\"tags\":[\"Mailing List\"]},{\"url\":\"https://pkg.go.dev/vuln/GO-2026-5015\",\"source\":\"security@golang.org\",\"tags\":[\"Vendor Advisory\"]},{\"url\":\"https://access.redhat.com/errata/RHSA-2026:26546\",\"source\":\"0b0ca135-0b70-47e7-9f44-1890c2a1c46c\"},{\"url\":\"https://access.redhat.com/errata/RHSA-2026:26547\",\"source\":\"0b0ca135-0b70-47e7-9f44-1890c2a1c46c\"},{\"url\":\"https://access.redhat.com/security/cve/CVE-2026-39835\",\"source\":\"0b0ca135-0b70-47e7-9f44-1890c2a1c46c\"},{\"url\":\"https://bugzilla.redhat.com/show_bug.cgi?id=2480680\",\"source\":\"0b0ca135-0b70-47e7-9f44-1890c2a1c46c\"},{\"url\":\"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-39835.json\",\"source\":\"0b0ca135-0b70-47e7-9f44-1890c2a1c46c\"}]}}",
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"golang.org/x/crypto/ssh: golang: golang.org/x/crypto/ssh: Denial of Service via crafted SSH certificate\", \"metrics\": [{\"other\": {\"type\": \"Red Hat severity rating\", \"content\": {\"value\": \"Important\", \"namespace\": \"https://access.redhat.com/security/updates/classification/\"}}}, {\"format\": \"CVSS\", \"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 7.5, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H\", \"integrityImpact\": \"NONE\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"NONE\", \"confidentialityImpact\": \"NONE\"}}], \"affected\": [{\"cpes\": [\"cpe:/a:redhat:advanced_cluster_security:4.10::el8\"], \"vendor\": \"Red Hat\", \"product\": \"Red Hat Advanced Cluster Security for Kubernetes 4.10\", \"defaultStatus\": \"affected\"}, {\"cpes\": [\"cpe:/a:redhat:advanced_cluster_security:4.9::el8\"], \"vendor\": \"Red Hat\", \"product\": \"Red Hat Advanced Cluster Security for Kubernetes 4.9\", \"defaultStatus\": \"affected\"}, {\"cpes\": [\"cpe:/a:redhat:assisted_installer:2\"], \"vendor\": \"Red Hat\", \"product\": \"Assisted Installer for Red Hat OpenShift Container Platform 2\", \"defaultStatus\": \"affected\"}, {\"cpes\": [\"cpe:/a:redhat:openshift_builds:1\"], \"vendor\": \"Red Hat\", \"product\": \"Builds for Red Hat OpenShift\", \"defaultStatus\": \"affected\"}, {\"cpes\": [\"cpe:/a:redhat:cert_manager:1\"], \"vendor\": \"Red Hat\", \"product\": \"cert-manager Operator for Red Hat OpenShift\", \"defaultStatus\": \"affected\"}, {\"cpes\": [\"cpe:/a:redhat:confidential_compute_attestation:1\"], \"vendor\": \"Red Hat\", \"product\": \"Confidential Compute Attestation\", \"defaultStatus\": \"affected\"}, {\"cpes\": [\"cpe:/a:redhat:cryostat:4\"], \"vendor\": \"Red Hat\", \"product\": \"Cryostat 4\", \"defaultStatus\": \"affected\"}, {\"cpes\": [\"cpe:/a:redhat:external_secrets_operator:1\"], \"vendor\": \"Red Hat\", \"product\": \"External Secrets Operator for Red Hat OpenShift\", \"defaultStatus\": \"affected\"}, {\"cpes\": [\"cpe:/a:redhat:multicluster_engine\"], \"vendor\": \"Red Hat\", \"product\": \"Multicluster Engine for Kubernetes\", \"defaultStatus\": \"affected\"}, {\"cpes\": [\"cpe:/a:redhat:openshift_api_data_protection:1\"], \"vendor\": \"Red Hat\", \"product\": \"OpenShift API for Data Protection\", \"defaultStatus\": \"affected\"}, {\"cpes\": [\"cpe:/a:redhat:openshift_pipelines:1\"], \"vendor\": \"Red Hat\", \"product\": \"OpenShift Pipelines\", \"defaultStatus\": \"affected\"}, {\"cpes\": [\"cpe:/a:redhat:serverless:1\"], \"vendor\": \"Red Hat\", \"product\": \"OpenShift Serverless\", \"defaultStatus\": \"affected\"}, {\"cpes\": [\"cpe:/a:redhat:acm:2\"], \"vendor\": \"Red Hat\", \"product\": \"Red Hat Advanced Cluster Management for Kubernetes 2\", \"defaultStatus\": \"affected\"}, {\"cpes\": [\"cpe:/a:redhat:advanced_cluster_security:4\"], \"vendor\": \"Red Hat\", \"product\": \"Red Hat Advanced Cluster Security 4\", \"defaultStatus\": \"affected\"}, {\"cpes\": [\"cpe:/a:redhat:ceph_storage:9\"], \"vendor\": \"Red Hat\", \"product\": \"Red Hat Ceph Storage 9\", \"defaultStatus\": \"affected\"}, {\"cpes\": [\"cpe:/a:redhat:edge_manager:1\"], \"vendor\": \"Red Hat\", \"product\": \"Red Hat Edge Manager 1\", \"defaultStatus\": \"affected\"}, {\"cpes\": [\"cpe:/o:redhat:enterprise_linux:10\"], \"vendor\": \"Red Hat\", \"product\": \"Red Hat Enterprise Linux 10\", \"defaultStatus\": \"affected\"}, {\"cpes\": [\"cpe:/o:redhat:enterprise_linux:8\"], \"vendor\": \"Red Hat\", \"product\": \"Red Hat Enterprise Linux 8\", \"defaultStatus\": \"affected\"}, {\"cpes\": [\"cpe:/o:redhat:enterprise_linux:9\"], \"vendor\": \"Red Hat\", \"product\": \"Red Hat Enterprise Linux 9\", \"defaultStatus\": \"affected\"}, {\"cpes\": [\"cpe:/a:redhat:openshift_ai\"], \"vendor\": \"Red Hat\", \"product\": \"Red Hat OpenShift AI (RHOAI)\", \"defaultStatus\": \"affected\"}, {\"cpes\": [\"cpe:/a:redhat:openshift:4\"], \"vendor\": \"Red Hat\", \"product\": \"Red Hat OpenShift Container Platform 4\", \"defaultStatus\": \"affected\"}, {\"cpes\": [\"cpe:/a:redhat:openshift_devspaces:3\"], \"vendor\": \"Red Hat\", \"product\": \"Red Hat OpenShift Dev Spaces\", \"defaultStatus\": \"affected\"}, {\"cpes\": [\"cpe:/a:redhat:devworkspace\"], \"vendor\": \"Red Hat\", \"product\": \"Red Hat OpenShift Dev Workspaces Operator\", \"defaultStatus\": \"affected\"}, {\"cpes\": [\"cpe:/a:redhat:windows_machine_config\"], \"vendor\": \"Red Hat\", \"product\": \"Red Hat OpenShift for Windows Containers\", \"defaultStatus\": \"affected\"}, {\"cpes\": [\"cpe:/a:redhat:openshift_gitops:1\"], \"vendor\": \"Red Hat\", \"product\": \"Red Hat OpenShift GitOps\", \"defaultStatus\": \"affected\"}, {\"cpes\": [\"cpe:/a:redhat:openshift_service_on_aws:1\"], \"vendor\": \"Red Hat\", \"product\": \"Red Hat OpenShift on AWS\", \"defaultStatus\": \"affected\"}, {\"cpes\": [\"cpe:/a:redhat:container_native_virtualization:4\"], \"vendor\": \"Red Hat\", \"product\": \"Red Hat OpenShift Virtualization 4\", \"defaultStatus\": \"affected\"}, {\"cpes\": [\"cpe:/a:redhat:openstack:16.2\"], \"vendor\": \"Red Hat\", \"product\": \"Red Hat OpenStack Platform 16.2\", \"defaultStatus\": \"affected\"}, {\"cpes\": [\"cpe:/a:redhat:quay:3\"], \"vendor\": \"Red Hat\", \"product\": \"Red Hat Quay 3\", \"defaultStatus\": \"affected\"}, {\"cpes\": [\"cpe:/a:redhat:trusted_artifact_signer:1\"], \"vendor\": \"Red Hat\", \"product\": \"Red Hat Trusted Artifact Signer\", \"defaultStatus\": \"affected\"}, {\"cpes\": [\"cpe:/a:redhat:openshift_security_profiles_operator:1\"], \"vendor\": \"Red Hat\", \"product\": \"Security Profiles Operator\", \"defaultStatus\": \"affected\"}, {\"cpes\": [\"cpe:/a:redhat:zero_trust_workload_identity_manager:1\"], \"vendor\": \"Red Hat\", \"product\": \"Zero Trust Workload Identity Manager\", \"defaultStatus\": \"affected\"}, {\"cpes\": [\"cpe:/a:redhat:zero_trust_workload_identity_manager:0\"], \"vendor\": \"Red Hat\", \"product\": \"Zero Trust Workload Identity Manager - Tech Preview\", \"defaultStatus\": \"affected\"}, {\"cpes\": [\"cpe:/a:redhat:openshift_data_foundation:4\"], \"vendor\": \"Red Hat\", \"product\": \"Red Hat Openshift Data Foundation 4\", \"defaultStatus\": \"unaffected\"}, {\"cpes\": [\"cpe:/a:redhat:openstack:17.1\"], \"vendor\": \"Red Hat\", \"product\": \"Red Hat OpenStack Platform 17.1\", \"defaultStatus\": \"unaffected\"}, {\"cpes\": [\"cpe:/a:redhat:openstack:18.0\"], \"vendor\": \"Red Hat\", \"product\": \"Red Hat OpenStack Platform 18.0\", \"defaultStatus\": \"unaffected\"}], \"timeline\": [{\"lang\": \"en\", \"time\": \"2026-05-22T04:01:27.279Z\", \"value\": \"Reported to Red Hat.\"}, {\"lang\": \"en\", \"time\": \"2026-05-22T02:31:26.982Z\", \"value\": \"Made public.\"}], \"solutions\": [{\"lang\": \"en\", \"value\": \"RHSA-2026:26547: Red Hat Advanced Cluster Security for Kubernetes 4.10\"}, {\"lang\": \"en\", \"value\": \"RHSA-2026:26546: Red Hat Advanced Cluster Security for Kubernetes 4.9\"}], \"x_adpType\": \"supplier\", \"datePublic\": \"2026-05-22T02:31:26.982Z\", \"references\": [{\"url\": \"https://access.redhat.com/security/cve/CVE-2026-39835\", \"tags\": [\"vdb-entry\", \"x_refsource_REDHAT\"]}, {\"url\": \"https://bugzilla.redhat.com/show_bug.cgi?id=2480680\", \"name\": \"RHBZ#2480680\", \"tags\": [\"issue-tracking\", \"x_refsource_REDHAT\"]}, {\"url\": \"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-39835.json\", \"tags\": [\"x_sadp-csaf-vex\"]}, {\"url\": \"https://access.redhat.com/errata/RHSA-2026:26547\", \"tags\": [\"vendor-advisory\", \"x_refsource_REDHAT\"]}, {\"url\": \"https://access.redhat.com/errata/RHSA-2026:26546\", \"tags\": [\"vendor-advisory\", \"x_refsource_REDHAT\"]}], \"workarounds\": [{\"lang\": \"en\", \"value\": \"Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.\"}], \"x_generator\": {\"engine\": \"sadp-cli 1.0.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"A flaw was found in golang.org/x/crypto/ssh. SSH servers configured to use CertChecker as a public key callback, without explicitly setting IsUserAuthority or IsHostAuthority, are vulnerable. A remote attacker can exploit this by presenting a specially crafted certificate, causing the server to panic and resulting in a Denial of Service (DoS).\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-476\", \"description\": \"NULL Pointer Dereference\"}]}], \"providerMetadata\": {\"orgId\": \"0b0ca135-0b70-47e7-9f44-1890c2a1c46c\", \"shortName\": \"redhat-SADP\", \"dateUpdated\": \"2026-07-03T12:05:01.812Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 5.3, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L\", \"integrityImpact\": \"NONE\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"LOW\", \"privilegesRequired\": \"NONE\", \"confidentialityImpact\": \"NONE\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-39835\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-05-22T17:44:50.320380Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-05-22T17:45:06.921Z\"}}], \"cna\": {\"title\": \"Invoking  server panic during CheckHostKey/Authenticate in golang.org/x/crypto/ssh\", \"credits\": [{\"lang\": \"en\", \"value\": \"NCC Group Cryptography Services, sponsored by Teleport\"}], \"affected\": [{\"vendor\": \"golang.org/x/crypto\", \"product\": \"golang.org/x/crypto/ssh\", \"versions\": [{\"status\": \"affected\", \"version\": \"0\", \"lessThan\": \"0.52.0\", \"versionType\": \"semver\"}], \"packageName\": \"golang.org/x/crypto/ssh\", \"collectionURL\": \"https://pkg.go.dev\", \"defaultStatus\": \"unaffected\", \"programRoutines\": [{\"name\": \"CertChecker.CheckHostKey\"}, {\"name\": \"CertChecker.Authenticate\"}]}], \"references\": [{\"url\": \"https://go.dev/issue/79563\"}, {\"url\": \"https://groups.google.com/g/golang-announce/c/a082jnz-LvI\"}, {\"url\": \"https://go.dev/cl/781660\"}, {\"url\": \"https://pkg.go.dev/vuln/GO-2026-5015\"}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"SSH servers which use CertChecker as a public key callback without setting IsUserAuthority or IsHostAuthority could be caused to panic by a client presenting a certificate. CertChecker now returns an error instead of panicking when these callbacks are nil.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"description\": \"CWE-476: NULL Pointer Dereference\"}]}], \"providerMetadata\": {\"orgId\": \"1bb62c36-49e3-4200-9d77-64a1400537cc\", \"shortName\": \"Go\", \"dateUpdated\": \"2026-05-22T02:31:26.982Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2026-39835\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-07-03T12:05:01.812Z\", \"dateReserved\": \"2026-04-07T18:13:03.529Z\", \"assignerOrgId\": \"1bb62c36-49e3-4200-9d77-64a1400537cc\", \"datePublished\": \"2026-05-22T02:31:26.982Z\", \"assignerShortName\": \"Go\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.