CVE-2026-79656
OAuth and OIDC tokens written unredacted to server logs by the Generic OAuth, Google and GitLab connectors
What happened?
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.
Affected software and versions
| Software | Version information | Fixed version |
|---|---|---|
| Grafana OSSGrafana | affected: 0 to ≤ 12.3.11; affected: 12.4.0 to < 12.4.11; affected: 13.0.0 to < 13.0.9; affected: 13.1.0 to < 13.1.6; affected: 13.2.0 to < 13.2.2 | See vendor advisory |
| Grafana EnterpriseGrafana | affected: 0 to ≤ 12.3.11; affected: 12.4.0 to < 12.4.11; affected: 13.0.0 to < 13.0.9; affected: 13.1.0 to < 13.1.6; affected: 13.2.0 to < 13.2.2 | See vendor advisory |
Version information comes from the source record and can include unaffected products and exceptions. Distribution packages may contain backported fixes: an older upstream version alone does not prove a server is affected.
Is it being exploited?
This CVE was not listed in the CISA catalogue at our last retrieval. This does not establish that exploitation is absent.
How to respond
- Confirm the product, installed package version, and any configuration requirements in the vendor advisory.
- Follow the vendor’s remediation or workaround guidance in the references below. Structured fixed-version data is unavailable here; the publisher’s description may include a fix or workaround.
- Restart affected services if required, then verify the running version. Known exploitation may warrant investigation as well as patching.