CVE-2026-102589
Cross-instance user impersonation through image renderer JWTs
When independent Grafana instances share the same [rendering] renderer_token, an image renderer key issued by one instance is accepted by the others, so a user on one instance could act as the user with the same ID on another (origin validation error). This affects instances with the renderAuthJWT feature toggle enabled, the default from Grafana 13.0.0.
Fixes and workarounds
No remediation reported in collected sources.
Missing remediation information is not evidence that no patch exists.
Affected products and versions
| Product | Versions | Authority |
|---|---|---|
| Grafana OSS Grafana |
≥ 9.5.0; ≤ 12.3.11 (affected, semver) ≥ 12.4.0; ≤ 12.4.14 (affected, semver) ≥ 13.0.0; ≤ 13.0.12 (affected, semver) ≥ 13.1.0; ≤ 13.1.9 (affected, semver) ≥ 13.2.0; ≤ 13.2.5 (affected, semver) ≥ 13.3.0; ≤ 13.3.0 (affected, semver) Other versions: unaffected |
CNA: GRAFANA |
| Grafana Enterprise Grafana |
≥ 9.5.0; ≤ 12.3.11 (affected, semver) ≥ 12.4.0; ≤ 12.4.14 (affected, semver) ≥ 13.0.0; ≤ 13.0.12 (affected, semver) ≥ 13.1.0; ≤ 13.1.9 (affected, semver) ≥ 13.2.0; ≤ 13.2.5 (affected, semver) ≥ 13.3.0; ≤ 13.3.0 (affected, semver) Other versions: unaffected |
CNA: GRAFANA |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 3.1 / 7.1 high |
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L | CNA: GRAFANA |
| 3.1 / 7.1 high |
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L | NVD: [email protected] |
Exploit evidence
No exploit evidence in collected sources. This is not proof of no exploitation.
References
For agents and automation
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