Read the docs
TI-2026-82091 Aliases CVE-2026-79656GHSA-jgwg-2rm4-8mgf

Grafana OAuth connectors write unredacted tokens to server logs

Priority LOW 26CWE-532Published · Updated

Key facts

Attack vector
Local
Privileges required
High
User interaction
None
Attack complexity
Low
Impact type
Information disclosure
Confidentiality · integrity · availability
High · None · None
Fix status
Partial Red Hat: 1 fixed, 8 without a fix

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-532.

Summary

Grafana OSS and Grafana Enterprise up to and including 12.3.11, from 12.4.0 before 12.4.11, from 13.0.0 before 13.0.9, from 13.1.0 before 13.1.6 and from 13.2.0 before 13.2.2 are affected. Grafana writes OAuth and OIDC access, refresh and ID tokens to its logs unredacted in some cases, which is CWE-532. A user with read access to the server logs or to a log store they are shipped to can recover the tokens of users who sign in through the Generic OAuth, Google or GitLab providers, limited by the scopes granted to the OAuth client.

Written with Claude Haiku 5.5 from the sources below · 2026-10-30

Description from the CNA

A user with read access to Grafana's server logs, or to a log store they are shipped to, can recover the OAuth and OIDC access, refresh and ID tokens of users who sign in through the Generic OAuth, Google or GitLab providers. Grafana writes these tokens to its logs unredacted when an access or ID token is not a valid JWT, when the ID token is missing (at debug level) or is not a string (exposure of sensitive information in log files). The exposure is bounded by the scopes granted to the configured OAuth client.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00161 5th percentileScored 2026-11-07
Fix Partial Grafana OSS (Grafana): 12.4.11, 13.0.9, 13.1.6 +1Grafana Enterprise (Grafana): 12.4.11, 13.0.9, 13.1.6 +1Red Hat: 3 advisoriesRed Hat: 1 fixed, 8 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
GrafanaGrafana OSSup to 12.3.11; 12.4.0 to before 12.4.11; 13.0.0 to before 13.0.9; 13.1.0 to before 13.1.6; 13.2.0 to before 13.2.212.4.11, 13.0.9, 13.1.6, 13.2.2Patch availableCNA
GrafanaGrafana Enterpriseup to 12.3.11; 12.4.0 to before 12.4.11; 13.0.0 to before 13.0.9; 13.1.0 to before 13.1.6; 13.2.0 to before 13.2.212.4.11, 13.0.9, 13.1.6, 13.2.2Patch availableCNA
  • Grafana OSS VendorGrafana Affected up to 12.3.11; 12.4.0 to before 12.4.11; 13.0.0 to before 13.0.9; 13.1.0 to before 13.1.6; 13.2.0 to before 13.2.2 Fixed in 12.4.11, 13.0.9, 13.1.6, 13.2.2 Patch available CNA
  • Grafana Enterprise VendorGrafana Affected up to 12.3.11; 12.4.0 to before 12.4.11; 13.0.0 to before 13.0.9; 13.1.0 to before 13.1.6; 13.2.0 to before 13.2.2 Fixed in 12.4.11, 13.0.9, 13.1.6, 13.2.2 Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:grafana:grafana:*:*:*:*:*:*:*:*——Grafana
  • cpe:2.3:a:grafana:grafana:*:*:*:*:*:*:*:* Versions — — ·Grafana

Remediation

Upgrade Grafana OSS and Grafana Enterprise to 12.4.11, 13.0.9, 13.1.6 or 13.2.2 on the matching release line. Red Hat fixes Red Hat Hardened Images in RHSA-2026:91292, RHSA-2026:91181 and RHSA-2026:90990. Red Hat's plan is none available for Multicluster Global Hub, Red Hat Advanced Cluster Management for Kubernetes 2, Red Hat Ceph Storage 7, 8 and 9, and Red Hat Enterprise Linux 8, 9 and 10.

Written with Claude Haiku 5.5 from the sources below · 2026-10-30

  • Fix · CNA Grafana OSS (Grafana) Fixed in 12.4.11, 13.0.9, 13.1.6, 13.2.2
  • Fix · CNA Grafana Enterprise (Grafana) Fixed in 12.4.11, 13.0.9, 13.1.6, 13.2.2

Red Hat 3 advisories

  • RHSA-2026:91292 Released 2026-10-27 · Red Hat rating Important
    Red Hat Hardened Images RPMs Security Update
    • Red Hat Hardened Images grafana12.4-12.4.13-0.5.hum1@aarch64, grafana12.4-12.4.13-0.5.hum1@src, grafana12.4-12.4.13-0.5.hum1@x86_64
  • RHSA-2026:91181 Released 2026-10-27 · Red Hat rating Important
    Red Hat Hardened Images RPMs Security Update
    • Red Hat Hardened Images grafana13.1-13.1.8-0.5.hum1@aarch64, grafana13.1-13.1.8-0.5.hum1@s390x, grafana13.1-13.1.8-0.5.hum1@src +1
  • RHSA-2026:90990 Released 2026-10-27 · Red Hat rating Important
    Red Hat Hardened Images RPMs Security Update
    • Red Hat Hardened Images grafana13.2-13.2.4-0.4.hum1@aarch64, grafana13.2-13.2.4-0.4.hum1@s390x, grafana13.2-13.2.4-0.4.hum1@src +1

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Multicluster Global HubAffectedNo fix yet: Fix deferred
Red Hat Advanced Cluster Management for Kubernetes 2AffectedNo fix yet: Fix deferred
Red Hat Ceph Storage 7AffectedNo fix yet: Fix deferred
Red Hat Ceph Storage 8AffectedNo fix yet: Fix deferred
Red Hat Ceph Storage 9AffectedNo fix yet: Fix deferred
Red Hat Enterprise Linux 10AffectedNo fix yet: Fix deferred
Red Hat Enterprise Linux 8AffectedNo fix yet: Fix deferred
Red Hat Enterprise Linux 9AffectedNo fix yet: Fix deferred
Red Hat Hardened ImagesFixed RHSA-2026:90990, RHSA-2026:91181, RHSA-2026:91292
Not affected: 1 product
  • Red Hat Hardened Images

Timeline

  1. 2026-10-28 Threatist record created from CVE-2026-79656
  2. 2026-10-28 Alias added: GHSA-jgwg-2rm4-8mgf
  3. 2026-10-30 Priority changed: MEDIUM → LOW
  4. 2026-10-30 Affected versions changed · Red Hat
  5. 2026-10-30 CVSS score added · Red Hat
  6. 2026-10-30 Fix available: RHSA-2026:91292 · Red Hat
  7. 2026-10-30 Fix available: RHSA-2026:91181 · Red Hat
  8. 2026-10-30 Fix available: RHSA-2026:90990 · Red Hat
  9. 2026-10-30 Fix available: Red Hat Hardened Images · Red Hat
  10. 2026-11-05 CISA SSVC decision points changed

References

Advisory 1

  • TI-2021-16611 Snapshot authentication bypass in grafana KEVCVSS 3.1CRITICAL 9.8
  • TI-2021-19604 Grafana path traversal KEVCVSS 3.1HIGH 7.5
  • TI-2024-08600 Grafana SQL Expressions allow for remote code execution CVSS 4.0CRITICAL 9.4
  • TI-2023-02931 Authentication bypass by spoofing in Grafana CVSS 3.1CRITICAL 9.8
  • TI-2020-10491 The avatar feature in Grafana 3.0.1 through 7.0.1 has an SSRF Incorrect Access Control… CVSS 3.1HIGH 8.2
  • TI-2025-03662 Open redirect in Grafana CVSS 3.1HIGH 7.6
See all 174 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences