OAuth and OIDC tokens written unredacted to server logs by the Generic OAuth, Google and GitLab connectors

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-79656
StatePUBLISHED
AssignerGRAFANA
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-10-28 18:17:20 UTC
Updated2026-10-29 15:29:45 UTC
DescriptionA 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.

Risk And Classification

Primary CVSS: v3.1 6 MEDIUM from [email protected]

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

Problem Types: CWE-532 | CWE-532 CWE-532

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary6MEDIUMCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N
3.1CNADECLARED6MEDIUMCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
None
Availability
None

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Grafana Grafana OSS affected 12.3.11 semver Not specified
CNA Grafana Grafana OSS affected 12.4.0 12.4.11 semver Not specified
CNA Grafana Grafana OSS affected 13.0.0 13.0.9 semver Not specified
CNA Grafana Grafana OSS affected 13.1.0 13.1.6 semver Not specified
CNA Grafana Grafana OSS affected 13.2.0 13.2.2 semver Not specified
CNA Grafana Grafana Enterprise affected 12.3.11 semver Not specified
CNA Grafana Grafana Enterprise affected 12.4.0 12.4.11 semver Not specified
CNA Grafana Grafana Enterprise affected 13.0.0 13.0.9 semver Not specified
CNA Grafana Grafana Enterprise affected 13.1.0 13.1.6 semver Not specified
CNA Grafana Grafana Enterprise affected 13.2.0 13.2.2 semver Not specified

References

ReferenceSourceLinkTags
grafana.com/security/security-advisories/cve-2026-79656 [email protected] grafana.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Baptiste Roux (baprx) (en)

© CVE.report 2026

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