Session takeover via Auth Proxy cache key collision (Grafana Grafana Enterprise)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.33 % · percentile 26 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- GRAFANA
- NVD status
- Analyzed
Description
Only self-managed Grafana instances with Auth Proxy authentication and identity caching enabled (sync_ttl greater than zero) are affected. The Auth Proxy cache key concatenated the username and forwarded identity attributes without a delimiter, so distinct identities could collide on one key. An authenticated user who shapes their own attributes to collide with a higher-privileged user's, while that user's cache entry is live, is authenticated as that user, up to Administrator (authentication bypass by spoofing).
Weaknesses (CWE)
- CWE-290 — Authentication Bypass by Spoofing
- CWE-1023 — Incomplete Comparison with Missing Factors
- CWE-863 — Incorrect Authorization
References
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | HIGH 7.1 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L | GRAFANA |
| CVSS 3.1 | HIGH 7.1 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L | NVD · security@grafana.com (Secondary) |
| CVSS 3.1 | HIGH 8.1 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N | NVD · nvd@nist.gov (Primary) |
European references
- ENISA EUVD · EUVD-2026-70198
- GCVE · GCVE-0-2026-14199
Affected configurations (NVD CPE)
cpe:2.3:a:grafana:grafana:*:*:*:*:enterprise:*:*:*< 11.0.0cpe:2.3:a:grafana:grafana:*:*:*:*:enterprise:*:*:*≥ 12.4.10 < 13.0.0cpe:2.3:a:grafana:grafana:*:*:*:*:enterprise:*:*:*≥ 13.0.8 < 13.1.0cpe:2.3:a:grafana:grafana:*:*:*:*:enterprise:*:*:*≥ 13.1.5 < 13.2.0
Affected products
| Product | Versions |
|---|---|
| Grafana · Grafana Enterprise | affected 11.0.0 ≤ 11.6.17 ; affected 12.0.0 ≤ 12.2.11 ; affected 12.3.0 ≤ 12.3.11 ; affected 12.4.0 ≤ 12.4.9 ; affected 13.0.0 ≤ 13.0.7 ; affected 13.1.0 ≤ 13.1.4 |
| Grafana · Grafana OSS | affected 11.0.0 ≤ 11.6.17 ; affected 12.0.0 ≤ 12.2.11 ; affected 12.3.0 ≤ 12.3.11 ; affected 12.4.0 ≤ 12.4.9 ; affected 13.0.0 ≤ 13.0.7 ; affected 13.1.0 ≤ 13.1.4 |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |