Missing Authorization Affecting matrix-js-sdk package, versions <38.2.0
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Start learning- Snyk IDSNYK-JS-MATRIXJSSDK-12818389
- published18 Sept 2025
- disclosed16 Sept 2025
- creditUnknown
Introduced: 16 Sep 2025
NewCVE-2025-59160 (opens in a new tab)Common Vulnerabilities and Exposures (CVE) are common identifiers for publicly known security vulnerabilities
Common Weakness Enumeration (CWE) is a category system for software weaknesses
How to fix?
Upgrade matrix-js-sdk to version 38.2.0 or higher.
Overview
matrix-js-sdk is a Matrix Client-Server SDK for Javascript
Affected versions of this package are vulnerable to Missing Authorization via insufficient validation of room predecessor links in the getJoinedRooms function. An attacker can cause a user to join an attacker-controlled room by supplying a malicious predecessor link.
Workarounds
Avoid using getJoinedRooms in favour of getRooms() and filtering upgraded rooms separately.