6.0
Medium
CVE-2026-79656 OAuth and OIDC tokens written unredacted to server logs by the Generic OAuth, Google and GitLab connectors
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.
CVSS 3.1 detail
Vector CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:NExploitable with local access to the machine, with an administrator account and without any user action; an attacker can seriously compromise confidentiality, integrity or availability.
- Attack vector
- Local
- Attack complexity
- Low
- Privileges required
- High
- Interaction
- None
- Scope
- Changed
- Confidentiality
- High
- Integrity
- None
- Availability
- None
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Grafana OSS 13.2 | 13.2.0 → < 13.2.2 | 13.2.2 |
| Grafana OSS 13.1 | 13.1.0 → < 13.1.6 | 13.1.6 |
| Grafana OSS 13.0 | 13.0.0 → < 13.0.9 | 13.0.9 |
| Grafana OSS 12.4 | 12.4.0 → < 12.4.11 | 12.4.11 |
| Grafana OSS 12.3 | earliest → 12.3.11 | No fix stated |
| Grafana Enterprise 13.2 | 13.2.0 → < 13.2.2 | 13.2.2 |
| Grafana Enterprise 13.1 | 13.1.0 → < 13.1.6 | 13.1.6 |
| Grafana Enterprise 13.0 | 13.0.0 → < 13.0.9 | 13.0.9 |
| Grafana Enterprise 12.4 | 12.4.0 → < 12.4.11 | 12.4.11 |
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| Product | Affected versions | Fixed in |
|---|---|---|
| Grafana Enterprise 12.3 | earliest → 12.3.11 | No fix stated |
References
- grafana.com grafana.com
Timeline
- Published
- Last modified