Vulnerability-Lookup

RHSA-2026:68777

Vulnerability from csaf_redhat - Published: 2026-09-17 20:53 - Updated: 2026-09-21 11:43

Summary

Red Hat Security Advisory: Red Hat Hardened Images RPMs Security Update

Severity

Moderate

Notes

Topic: An update for Red Hat Hardened Images RPMs is now available.

Details: This update includes the following RPMs: grafana12.4: * grafana12.4-12.4.10-0.5.hum1 (aarch64, x86_64) * grafana12.4-12.4.10-0.5.hum1.src (src) Security Fix(es): grafana12.4: * CVE-2026-81871

Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.

CVE-2026-61709

A flaw was found in OpenFGA, an authorization and permission engine. The ListUsers application programming interface (API) could incorrectly return users who should have been excluded from authorization decisions. This vulnerability arises when complex authorization rules, involving both exclusions and type-bound wildcards, are processed. Consequently, applications relying on ListUsers for access control might inadvertently grant unauthorized access to resources or sensitive information.

5.3 (Medium)


                
                  CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N

CWE-783 - Operator Precedence Logic Error

Affected products

Fixed 3 products

Product	Version	Remediation
Unresolved product id: Red Hat Hardened Images:grafana12.4-0:12.4.10-0.5.hum1@aarch64	—	Vendor Fix fix Workaround
Unresolved product id: Red Hat Hardened Images:grafana12.4-0:12.4.10-0.5.hum1@src	—	Vendor Fix fix Workaround
Unresolved product id: Red Hat Hardened Images:grafana12.4-0:12.4.10-0.5.hum1@x86_64	—	Vendor Fix fix Workaround

Threats

Impact Moderate

CVE-2026-81871

A flaw was found in OpenTelemetry-Go, specifically within its gRPC log exporter. This vulnerability allows a network attacker to bypass the intended private Certificate Authority (CA) pinning and mutual Transport Layer Security (TLS) configurations. The issue arises because the environment-only TLS path incorrectly uses system-trusted certificates instead of the application's configured client certificates. This bypass enables an attacker to intercept and spoof the collector connection, potentially leading to the unauthorized reading or alteration of sensitive log telemetry.

6.5 (Medium)


                
                  CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

CWE-295 - Improper Certificate Validation

Affected products

Fixed 3 products, the same list as for CVE-2026-61709

Threats

Impact Moderate

References

20 references

URL	Category
https://access.redhat.com/errata/RHSA-2026:68777	self
https://access.redhat.com/security/cve/CVE-2026-81871	external
https://access.redhat.com/security/updates/classi…	external
https://images.redhat.com/	external
https://access.redhat.com/security/cve/CVE-2026-61709	external
https://security.access.redhat.com/data/csaf/v2/a…	self
https://access.redhat.com/security/cve/CVE-2026-61709	self
https://bugzilla.redhat.com/show_bug.cgi?id=2535473	external
https://www.cve.org/CVERecord?id=CVE-2026-61709	external
https://nvd.nist.gov/vuln/detail/CVE-2026-61709	external
https://github.com/openfga/openfga/commit/171806c…	external
https://github.com/openfga/openfga/releases/tag/v1.18.1	external
https://github.com/openfga/openfga/security/advis…	external
https://access.redhat.com/security/cve/CVE-2026-81871	self
https://bugzilla.redhat.com/show_bug.cgi?id=2535725	external
https://www.cve.org/CVERecord?id=CVE-2026-81871	external
https://nvd.nist.gov/vuln/detail/CVE-2026-81871	external
https://github.com/open-telemetry/opentelemetry-g…	external
https://github.com/open-telemetry/opentelemetry-g…	external
https://github.com/open-telemetry/opentelemetry-g…	external

JSON

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      "discovery_date": "2026-09-16T14:32:23.029152+00:00",
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          "title": "Vulnerability description"
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          "title": "Vulnerability description"
        },
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        },
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          },
          "products": [
            "Red Hat Hardened Images:grafana12.4-0:12.4.10-0.5.hum1@aarch64",
            "Red Hat Hardened Images:grafana12.4-0:12.4.10-0.5.hum1@src",
            "Red Hat Hardened Images:grafana12.4-0:12.4.10-0.5.hum1@x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "go.opentelemetry.io/otel/exporters/otlp/otlplog/otlploggrpc: OpenTelemetry-Go: TLS certificate bypass allows log telemetry interception and alteration"
    }
  ]
}

CVE-2026-61709 (GCVE-0-2026-61709)

Vulnerability from cvelistv5 – Published: 2026-09-16 14:05 – Updated: 2026-09-18 17:52

Title

OpenFGA: ListUsers returns a deliberately-excluded user (authorization-decision over-inclusion) when a `but not` exclusion under a type-bound wildcard is intersected (`and`) with another relation that also grants that user

Summary

OpenFGA is an authorization and permission engine built for developers. Prior to 1.18.1, the ListUsers API could return a user that should have been excluded when an authorization relation used an intersection containing a base but not excluded operand, the base was granted through a type-bound public wildcard, and the excluded user also had a concrete tuple through another intersection operand. In pkg/server/commands/listusers/list_users_rpc.go, expandIntersection counted the concrete tuple and wildcard without first rejecting entries in excludedUsersMap. Applications that used ListUsers to enumerate or enforce access could therefore treat an excluded user as authorized. This issue is fixed in version 1.18.1.

Severity

5.3 (Medium)


                        
                          CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-18 17:52 UTC

CWE

CWE-281 - Improper Preservation of Permissions
CWE-863 - Incorrect Authorization

Assigner

GitHub_M mitre root

References

3 references

URL	Tags
https://github.com/openfga/openfga/security/advis…	x_refsource_CONFIRM
https://github.com/openfga/openfga/commit/171806c…	x_refsource_MISC
https://github.com/openfga/openfga/releases/tag/v1.18.1	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
openfga	openfga	Affected: < 1.18.1

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-61709",
                "options": [
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                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-09-18T17:52:21.970517Z",
                "version": "2.0.3"
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          }
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        "providerMetadata": {
          "dateUpdated": "2026-09-18T17:52:34.349Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
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        {
          "lang": "en",
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        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
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            "version": "3.1"
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              "description": "CWE-281: Improper Preservation of Permissions",
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            }
          ]
        },
        {
          "descriptions": [
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              "description": "CWE-863: Incorrect Authorization",
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      "providerMetadata": {
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        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/openfga/openfga/security/advisories/GHSA-g3pg-frfm-pr2m",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/openfga/openfga/security/advisories/GHSA-g3pg-frfm-pr2m"
        },
        {
          "name": "https://github.com/openfga/openfga/commit/171806c93b86bca29e0212ceb8b6ee9c48eb9ac3",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/openfga/openfga/commit/171806c93b86bca29e0212ceb8b6ee9c48eb9ac3"
        },
        {
          "name": "https://github.com/openfga/openfga/releases/tag/v1.18.1",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/openfga/openfga/releases/tag/v1.18.1"
        }
      ],
      "source": {
        "advisory": "GHSA-g3pg-frfm-pr2m",
        "discovery": "UNKNOWN"
      },
      "title": "OpenFGA: ListUsers returns a deliberately-excluded user (authorization-decision over-inclusion) when a `but not` exclusion under a type-bound wildcard is intersected (`and`) with another relation that also grants that user"
    }
  },
  "cveMetadata": {
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    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-61709",
    "datePublished": "2026-09-16T14:05:35.455Z",
    "dateReserved": "2026-07-10T18:51:13.919Z",
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    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

CVE-2026-81871 (GCVE-0-2026-81871)

Vulnerability from cvelistv5 – Published: 2026-09-16 20:43 – Updated: 2026-09-17 19:24

Title

OpenTelemetry-Go: Log gRPC exporter ignores env TLS certs, bypassing mTLS/pinning

Summary

OpenTelemetry-Go is the Go implementation of OpenTelemetry. Prior to version 0.21.0, the exporters/otlp/otlplog/otlploggrpc package loads OTEL_EXPORTER_OTLP_LOGS_CERTIFICATE, OTEL_EXPORTER_OTLP_CERTIFICATE, and related client certificate environment variables through loadEnvTLS into cfg.tlsCfg, but newGRPCDialOptions does not apply cfg.tlsCfg when creating gRPC transport credentials. The environment-only TLS path instead uses credentials.NewTLS with system roots and no configured client certificate, bypassing intended private CA pinning and mutual TLS unless the application also supplies WithTLSCredentials. A network attacker able to intercept or spoof the collector connection with a system-trusted certificate can read or alter log telemetry. This issue is fixed in version 0.21.0.

Severity

6.3 (Medium)


                        
                          CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-17 17:10 UTC

CWE

CWE-295 - Improper Certificate Validation
CWE-923 - Improper Restriction of Communication Channel to Intended Endpoints

Assigner

GitHub_M mitre root

References

3 references

URL	Tags
https://github.com/open-telemetry/opentelemetry-g…	x_refsource_CONFIRM
https://github.com/open-telemetry/opentelemetry-g…	x_refsource_MISC
https://github.com/open-telemetry/opentelemetry-g…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
open-telemetry	opentelemetry-go	Affected: < 0.21.0

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-81871",
                "options": [
                  {
                    "Exploitation": "none"
                  },
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                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-09-17T17:10:34.419383Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
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          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-09-17T19:24:00.081Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
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          "product": "opentelemetry-go",
          "vendor": "open-telemetry",
          "versions": [
            {
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              "version": "\u003c 0.21.0"
            }
          ]
        }
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        {
          "lang": "en",
          "value": "OpenTelemetry-Go is the Go implementation of OpenTelemetry. Prior to version 0.21.0, the exporters/otlp/otlplog/otlploggrpc package loads OTEL_EXPORTER_OTLP_LOGS_CERTIFICATE, OTEL_EXPORTER_OTLP_CERTIFICATE, and related client certificate environment variables through loadEnvTLS into cfg.tlsCfg, but newGRPCDialOptions does not apply cfg.tlsCfg when creating gRPC transport credentials. The environment-only TLS path instead uses credentials.NewTLS with system roots and no configured client certificate, bypassing intended private CA pinning and mutual TLS unless the application also supplies WithTLSCredentials. A network attacker able to intercept or spoof the collector connection with a system-trusted certificate can read or alter log telemetry. This issue is fixed in version 0.21.0."
        }
      ],
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            "attackRequirements": "PRESENT",
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            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
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            {
              "cweId": "CWE-923",
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              "type": "CWE"
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        "dateUpdated": "2026-09-16T20:43:40.119Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
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          "name": "https://github.com/open-telemetry/opentelemetry-go/security/advisories/GHSA-w34q-cm8f-9c5x",
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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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

RHSA-2026:68777

CVE-2026-61709 (GCVE-0-2026-61709)

CVE-2026-81871 (GCVE-0-2026-81871)

Tags

Sightings

Nomenclature

Related by attack behaviour