# CVE-2026-79656: OAuth and OIDC tokens written unredacted to server logs by the Generic OAuth, Google and GitLab connectors

Status: published. Published: 2026-10-28. Updated: 2026-11-05.

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.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- Grafana / Grafana OSS: ≥ 0; ≤ 12.3.11 (affected, semver); ≥ 12.4.0; < 12.4.11 (affected, semver); ≥ 13.0.0; < 13.0.9 (affected, semver); ≥ 13.1.0; < 13.1.6 (affected, semver); ≥ 13.2.0; < 13.2.2 (affected, semver). Source: CNA: GRAFANA
- Grafana / Grafana Enterprise: ≥ 0; ≤ 12.3.11 (affected, semver); ≥ 12.4.0; < 12.4.11 (affected, semver); ≥ 13.0.0; < 13.0.9 (affected, semver); ≥ 13.1.0; < 13.1.6 (affected, semver); ≥ 13.2.0; < 13.2.2 (affected, semver). Source: CNA: GRAFANA

## Severity and prioritization

- CVSS 3.1: 6 (medium); CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N; source: CNA: GRAFANA

- CVSS 3.1: 6 (medium); CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N; source: NVD: security@grafana.com

- CISA KEV: No listing in collected sources

- EPSS: 0.16% as of 2026-11-05; percentile 5.29%

- SSVC: exploitation none; automatable no; technical impact partial; source ADP: CISA-ADP

- Weaknesses: CWE-532

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://grafana.com/security/security-advisories/cve-2026-79656 (CNA: GRAFANA; vendor-advisory)

- https://grafana.com/security/security-advisories/cve-2026-79656 (security@grafana.com)

## Provenance

- CNA: GRAFANA: https://www.cve.org/CVERecord?id=CVE-2026-79656; retrieved 2026-11-05; source updated 2026-11-05

- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-79656; retrieved 2026-11-05; source updated 2026-11-05

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-79656; retrieved 2026-11-05; source updated Not reported

Revision: a93a6d9fe878d61d854ffcf3590b7d6589dc7f22be99fa7f760d217b8950706f

Canonical: https://y2.dev/cve/CVE-2026-79656

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