Session takeover via Auth Proxy cache key collision
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · None
- Fix status
- Partial Red Hat: 3 fixed, 5 without a fix
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-290.
Summary
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).
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Grafana | Grafana Enterprise | 11.0.0 – 11.6.17; 12.0.0 – 12.2.11; 12.3.0 – 12.3.11; 12.4.0 – 12.4.9; 13.0.0 – 13.0.7; 13.1.0 – 13.1.4; 13.2.0 – 13.2.0 | — | No fix listed | CNA |
| Grafana | Grafana OSS | 11.0.0 – 11.6.17; 12.0.0 – 12.2.11; 12.3.0 – 12.3.11; 12.4.0 – 12.4.9; 13.0.0 – 13.0.7; 13.1.0 – 13.1.4; 13.2.0 – 13.2.0 | — | No fix listed | CNA |
- Grafana Enterprise VendorGrafana Affected 11.0.0 – 11.6.17; 12.0.0 – 12.2.11; 12.3.0 – 12.3.11; 12.4.0 – 12.4.9; 13.0.0 – 13.0.7; 13.1.0 – 13.1.4; 13.2.0 – 13.2.0 Fixed in — No fix listed CNA
- Grafana OSS VendorGrafana Affected 11.0.0 – 11.6.17; 12.0.0 – 12.2.11; 12.3.0 – 12.3.11; 12.4.0 – 12.4.9; 13.0.0 – 13.0.7; 13.1.0 – 13.1.4; 13.2.0 – 13.2.0 Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:grafana:grafana:*:*:*:*:enterprise:*:*:* | before 11.0.0; 12.4.10 to before 13.0.0; 13.0.8 to before 13.1.0; 13.1.5 to before 13.2.0 | Vulnerable | Grafana |
- cpe:2.3:a:grafana:grafana:*:*:*:*:enterprise:*:*:* Versions before 11.0.0; 12.4.10 to before 13.0.0; 13.0.8 to before 13.1.0; 13.1.5 to before 13.2.0 Vulnerable ·Grafana
Remediation
Red Hat 4 advisories
- RHSA-2026:95517 Released 2026-11-05 · Red Hat rating ImportantMulticluster Global Hub 1.7.4 security update
- Multicluster Global Hub 1.7.4 registry.redhat.io/multicluster-globalhub/multicluster-globalhub-agent-rhel9, registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9, registry.redhat.io/multicluster-globalhub/multicluster-globalhub-manager-rhel9 +1
- RHSA-2026:92307 Released 2026-10-29 · Red Hat rating ImportantRed Hat Advanced Cluster Management for Kubernetes v2.13.14 security update
- Red Hat Advanced Cluster Management for Kubernetes 2.13 registry.redhat.io/rhacm2/acm-grafana-rhel9, registry.redhat.io/rhacm2/acm-multicluster-observability-addon-rhel9, registry.redhat.io/rhacm2/acm-prometheus-config-reloader-rhel9 +16
- RHSA-2026:68926 Released 2026-09-18 · Red Hat rating ImportantRed Hat Hardened Images RPMs Security Update
- Red Hat Hardened Images grafana13.1-13.1.6-0.2.hum1@aarch64, grafana13.1-13.1.6-0.2.hum1@src, grafana13.1-13.1.6-0.2.hum1@x86_64
Show 1 more Red Hat advisories
- RHSA-2026:66008 Released 2026-09-09 · Red Hat rating ImportantRed Hat Hardened Images RPMs bug fix and enhancement update
- Red Hat Hardened Images grafana12.4-12.4.10-0.2.hum1@aarch64, grafana12.4-12.4.10-0.2.hum1@src, grafana12.4-12.4.10-0.2.hum1@x86_64
Vendor assessments
Red Hat
Red Hat rating: Important. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Ceph Storage 5 | Affected | No fix yet: Fix deferred |
| Red Hat Ceph Storage 6 | Affected | No fix yet: Fix deferred |
| Red Hat Ceph Storage 7 | Affected | No fix yet: Fix deferred |
| Red Hat Ceph Storage 8 | Affected | No fix yet: Fix deferred |
| Red Hat Ceph Storage 9 | Affected | No fix yet: Fix deferred |
| Multicluster Global Hub 1.7.4 | Fixed | RHSA-2026:95517 |
| Red Hat Advanced Cluster Management for Kubernetes 2.13 | Fixed | RHSA-2026:92307 |
| Red Hat Hardened Images | Fixed | RHSA-2026:66008, RHSA-2026:68926 |
Not affected: 5 products
- Multicluster Global Hub 1.7.4
- Red Hat Advanced Cluster Management for Kubernetes 2.13
- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
Timeline
- 2026-10-02 Threatist record created from CVE-2026-14199
- 2026-10-03 Alias added: GHSA-9758-8g25-vw94
- 2026-10-30 Fix available: RHSA-2026:92307 · Red Hat
- 2026-10-30 Fix available: Red Hat Advanced Cluster Management for Kubernetes 2.13 · Red Hat
- 2026-11-06 Fix available: Multicluster Global Hub 1.7.4 · Red Hat
- 2026-11-06 Fix available: RHSA-2026:95517 · Red Hat
References
More Grafana vulnerabilities
- TI-2021-16611 Snapshot authentication bypass in grafana KEVCVSS 3.1CRITICAL 9.8
- TI-2021-19604 Grafana path traversal KEVCVSS 3.1HIGH 7.5
- TI-2024-08600 Grafana SQL Expressions allow for remote code execution CVSS 4.0CRITICAL 9.4
- TI-2023-02931 Authentication bypass by spoofing in Grafana CVSS 3.1CRITICAL 9.8
- TI-2020-10491 The avatar feature in Grafana 3.0.1 through 7.0.1 has an SSRF Incorrect Access Control… CVSS 3.1HIGH 8.2
- TI-2025-03662 Open redirect in Grafana CVSS 3.1HIGH 7.6
Sources
- CVE-2026-14199 · CVE Program
- CVE-2026-14199 · NVD
- FIRST EPSS
- GHSA-9758-8g25-vw94 · GitHub Advisory Database · CC BY 4.0
- CVE-2026-14199 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences