CVE-2026-65054

Deferred Deferred - Pending Action

Authenticated Information Disclosure in MediaCMS via Playlist API

Publication date: 2026-07-21

Last updated on: 2026-07-22

Assigner: VulnCheck

Description

MediaCMS 8.2.0 contains an information disclosure vulnerability that allows authenticated users to expose private media metadata belonging to other users by adding arbitrary media tokens to their own playlist without access control checks. Attackers can issue a PUT request to the playlist API endpoint with a known media token to bypass state and ownership validation, then retrieve the playlist to read private media fields including title, description, view count, like count, file size, author username, and encoding status through the unfiltered playlist owner branch in the playlist detail view.

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-07-21

Last Modified

2026-07-22

Generated

2026-08-11

AI Q&A

2026-07-22

EPSS Evaluated

2026-08-09

NVD

CVE-2026-65054

Affected Vendors & Products

Vendor	Product	Version / Range
mediacms	mediacms	8.2.0

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-863	The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.

Attack-Flow Graph

Executive Summary

MediaCMS 8.2.0 has an information disclosure vulnerability where authenticated users can access private media metadata of other users by adding arbitrary media tokens to their own playlist. This happens because the application fails to validate ownership or access rights when processing playlist requests.

Detection Guidance

Detecting this vulnerability requires checking MediaCMS API endpoints for unauthorized playlist modifications. Monitor PUT requests to /api/playlist/ with arbitrary media tokens. Inspect playlist responses for private media fields like title, description, or author username not belonging to the requester.

Impact Analysis

If exploited, this vulnerability could allow attackers to view sensitive details of private media files, such as titles, descriptions, view counts, like counts, file sizes, author usernames, and encoding status. This could lead to privacy breaches or unauthorized access to confidential information.

Compliance Impact

This vulnerability could violate privacy regulations like GDPR or HIPAA by exposing personal or sensitive data without authorization. Organizations using MediaCMS may face compliance violations, legal penalties, and reputational damage due to unauthorized data exposure.

Mitigation Strategies

Immediately update MediaCMS to the latest patched version. Review server logs for suspicious PUT requests to /api/playlist/. Implement strict access controls to validate media token ownership before allowing playlist modifications. Disable unfiltered playlist owner branch in detail views.

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