CVE-2026-39828 (GCVE-0-2026-39828)

Vulnerability from cvelistv5 – Published: 2026-05-22 02:31 – Updated: 2026-07-02 12:05
VLAI
Title
Invoking bypass of certificate restrictions in golang.org/x/crypto/ssh
Summary
When an SSH server authentication callback returned PartialSuccessError with non-nil Permissions, those permissions were silently discarded, potentially dropping certificate restrictions such as force-command after a second factor succeeded. Returning non-nil Permissions with PartialSuccessError now results in a connection error.
Severity
6.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
8.8 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-863 - Incorrect Authorization
  • CWE-281 - Improper Preservation of Permissions
Assigner
Go
References
Impacted products
Vendor Product Version
golang.org/x/crypto golang.org/x/crypto/ssh Affected: 0 , < 0.52.0 (semver)
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Red Hat Red Hat Advanced Cluster Security for Kubernetes 4.10     cpe:/a:redhat:advanced_cluster_security:4.10::el8
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Red Hat Red Hat Advanced Cluster Security for Kubernetes 4.9     cpe:/a:redhat:advanced_cluster_security:4.9::el8
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Red Hat Assisted Installer for Red Hat OpenShift Container Platform 2     cpe:/a:redhat:assisted_installer:2
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Red Hat Builds for Red Hat OpenShift     cpe:/a:redhat:openshift_builds:1
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Red Hat cert-manager Operator for Red Hat OpenShift     cpe:/a:redhat:cert_manager:1
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Red Hat Confidential Compute Attestation     cpe:/a:redhat:confidential_compute_attestation:1
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Red Hat Cryostat 4     cpe:/a:redhat:cryostat:4
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Red Hat External Secrets Operator for Red Hat OpenShift     cpe:/a:redhat:external_secrets_operator:1
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Red Hat Multicluster Engine for Kubernetes     cpe:/a:redhat:multicluster_engine
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Red Hat OpenShift API for Data Protection     cpe:/a:redhat:openshift_api_data_protection:1
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Red Hat OpenShift Pipelines     cpe:/a:redhat:openshift_pipelines:1
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Red Hat OpenShift Serverless     cpe:/a:redhat:serverless:1
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Red Hat Red Hat Advanced Cluster Management for Kubernetes 2     cpe:/a:redhat:acm:2
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Red Hat Red Hat Advanced Cluster Security 4     cpe:/a:redhat:advanced_cluster_security:4
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Red Hat Red Hat Ceph Storage 9     cpe:/a:redhat:ceph_storage:9
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Red Hat Red Hat Edge Manager 1     cpe:/a:redhat:edge_manager:1
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Red Hat Red Hat Enterprise Linux 10     cpe:/o:redhat:enterprise_linux:10
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Red Hat Red Hat Enterprise Linux 9     cpe:/o:redhat:enterprise_linux:9
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Red Hat Red Hat OpenShift AI (RHOAI)     cpe:/a:redhat:openshift_ai
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Red Hat Red Hat OpenShift Container Platform 4     cpe:/a:redhat:openshift:4
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Red Hat Red Hat OpenShift Dev Spaces     cpe:/a:redhat:openshift_devspaces:3
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Red Hat Red Hat OpenShift Dev Workspaces Operator     cpe:/a:redhat:devworkspace
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Red Hat Red Hat OpenShift for Windows Containers     cpe:/a:redhat:windows_machine_config
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Red Hat Red Hat OpenShift GitOps     cpe:/a:redhat:openshift_gitops:1
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Red Hat Red Hat OpenShift on AWS     cpe:/a:redhat:openshift_service_on_aws:1
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Red Hat Red Hat OpenShift Virtualization 4     cpe:/a:redhat:container_native_virtualization:4
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Red Hat Red Hat OpenStack Platform 18.0     cpe:/a:redhat:openstack:18.0
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Red Hat Red Hat Quay 3     cpe:/a:redhat:quay:3
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Red Hat Red Hat Trusted Artifact Signer     cpe:/a:redhat:trusted_artifact_signer:1
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Red Hat Security Profiles Operator     cpe:/a:redhat:openshift_security_profiles_operator:1
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Red Hat Zero Trust Workload Identity Manager     cpe:/a:redhat:zero_trust_workload_identity_manager:1
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Red Hat Zero Trust Workload Identity Manager - Tech Preview     cpe:/a:redhat:zero_trust_workload_identity_manager:0
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Red Hat Red Hat Enterprise Linux 8     cpe:/o:redhat:enterprise_linux:8
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Red Hat Red Hat Openshift Data Foundation 4     cpe:/a:redhat:openshift_data_foundation:4
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Red Hat Red Hat OpenStack Platform 16.2     cpe:/a:redhat:openstack:16.2
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Red Hat Red Hat OpenStack Platform 17.1     cpe:/a:redhat:openstack:17.1
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Credits
NCC Group Cryptography Services, sponsored by Teleport
Show details on NVD website
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        {
          "lang": "en",
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      "dataType": "CVE_RECORD",
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    }
  }
}


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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.