CVE-2024-50336: Matrix-Org Matrix-Js-SDK

Medium severity, CVSS 5.3. EPSS: 0.8% chance of exploitation in the next 30 days.

matrix-js-sdk is a Matrix messaging protocol Client-Server SDK for JavaScript. matrix-js-sdk before 34.11.0 is vulnerable to client-side path traversal via crafted MXC URIs. A malicious room member can trigger clients based on the matrix-js-sdk to issue arbitrary authenticated GET requests to the client's homeserver. Fixed in matrix-js-sdk 34.11.1.

Affected products

• Matrix-Org Matrix-Js-SDK: before 34.11.1 (fixed in 34.11.1)

Published 2024-11-12. Last modified 2026-06-17.