Cross-monitor event media authorization bypass in direct event media endpoints (CVE-2026-54258) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-54258

Cross-monitor event media authorization bypass in direct event media endpoints

Answer in brief

CVE-2026-54258 records a Unknown severity vulnerability in Cross-monitor event media authorization bypass in direct event media endpoints. The current sources do not mark it as known exploited. The current feed maps ZoneMinder/zoneminder (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 11, 2026Updated Sep 11, 2026Source checked Sep 11, 2026First seen by HOL Sep 11, 2026Material review Sep 11, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
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 ZoneMinder/zoneminder (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
ZoneMinder/zonemindergeneric	< 1.36.39 \|\| >= 1.37.0, < 1.38.4 \|\| >= 1.39.0, < 1.39.11	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for ZoneMinder/zoneminder.
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 11, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 11, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 11, 2026

Sources and claim methodology

GitHub security advisorygithub.com

Upstream source description

ZoneMinder is a free, open source closed-circuit television software application. Versions prior to 1.36.39, 1.38.4, and 1.39.11 allow an authenticated low-privileged user with coarse `Events=View` and/or `Snapshots=View` permissions to directly fetch media for events belonging to monitors they are not allowed to access. The normal UI correctly hides the restricted monitor and its events, but direct event media views accept an arbitrary `eid` and stream media from the event path without enforcing the event/monitor-level ACL. This exposes private surveillance footage across monitor boundaries. Versions 1.36.39, 1.38.4, and 1.39.11 fix the issue.

Quoted source text, attributed separately from HOL analysis.