Information disclosure in Grafana Enterprise
CVE-2026-79656
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.
Published .
CVSS v3 metric
CVSS v3 base score 6.0 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- grafana.com/security/security-advisories/cve-2026-79656 (vendor-advisory)
Frequently asked questions
- What is CVE-2026-79656?
- CVE-2026-79656 is a medium-severity vulnerability in Grafana Enterprise, classified under Insertion of Sensitive Information into Log File. CVSS score: 6.0/10. Published 2026-10-28.
- How severe is CVE-2026-79656?
- Medium severity. CVSS v3 base score is 6.0 out of 10.