Session takeover via Auth Proxy cache key collision (CVE-2026-14199) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-14199

Session takeover via Auth Proxy cache key collision

Answer in brief

CVE-2026-14199 records a Unknown severity vulnerability in Session takeover via Auth Proxy cache key collision. The current sources do not mark it as known exploited. The current feed maps Grafana/Grafana Enterprise (generic), Grafana/Grafana OSS (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 2, 2026Updated Sep 3, 2026Source checked Sep 3, 2026First seen by HOL Sep 2, 2026Material review Sep 3, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 2 mapped packages or products
Fix availability: Not reported

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Grafana/Grafana Enterprise (generic), Grafana/Grafana OSS (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Grafana/Grafana Enterprisegeneric	11.0.0 \|\| 12.0.0 \|\| 12.3.0 \|\| 12.4.0 \|\| 13.0.0 \|\| 13.1.0 \|\| 13.2.0	Not reported
Grafana/Grafana OSSgeneric	11.0.0 \|\| 12.0.0 \|\| 12.3.0 \|\| 12.4.0 \|\| 13.0.0 \|\| 13.1.0 \|\| 13.2.0	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Grafana/Grafana Enterprise, Grafana/Grafana OSS.
Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

Published upstream
Sep 2, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 3, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 2, 2026

Sources and claim methodology

Source referencegrafana.com

Upstream source 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).

Quoted source text, attributed separately from HOL analysis.