CVE-2026-79656 is a vulnerability in Grafana Labs Grafana

CVE-2026-79656 is a vulnerability in Grafana Labs Grafana
Published on October 28, 2026

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

Weakness Type

Insertion of Sensitive Information into Log File

Information written to log files can be of a sensitive nature and give valuable guidance to an attacker or expose sensitive user information.

Products Associated with CVE-2026-79656

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Affected Versions

Before and including 12.3.11 is affected.

Version 12.4.0 and below 12.4.11 is affected.

Version 13.0.0 and below 13.0.9 is affected.

Version 13.1.0 and below 13.1.6 is affected.

Version 13.2.0 and below 13.2.2 is affected.