CVE-2026-79656 OAuth and OIDC tokens written unredacted to server logs by the Generic OAuth, Google and GitLab connectors
- Exploited in the wild
- Not known
- Fix
- Available
What is CVE-2026-79656?
CVE-2026-79656 is a medium-severity vulnerability in Grafana Enterprise, published on 28 Oct 2026.
Official description
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: CWE-532
Which versions are affected by CVE-2026-79656?
How do I fix CVE-2026-79656?
Upgrade to a fixed version.
Is CVE-2026-79656 being exploited?
There is no known exploitation of CVE-2026-79656 in the wild and no public exploit code.
Sources
Also known as GHSA-jgwg-2rm4-8mgf.