matrix-js-sdk has insufficient MXC URI validation which allows client-side path traversal

보통 5.3CVE-2024-50336 · GHSA-xvg8-m4x3-w6xr · Published 12/11/2024 · updated 17/06/2026

요약

CVE-2024-50336은(는) matrix-js-sdk에 영향을 주는 보통 (CVSS 5.3) 취약점입니다.
향후 30일 내 악용 확률(EPSS): 0.83%, 전체 취약점의 57.5%보다 높음.
조치: 34.11.1 이상으로 업데이트하세요.

Package	Affected versions	Patched versions
matrix-js-sdk npm	`< 34.11.1`	`34.11.1`

Description

Summary

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.

Details

The Matrix specification demands homeservers to perform validation of the server-name and media-id components of MXC URIs with the intent to prevent path traversal. However, it is not mentioned that a similar check must also be performed on the client to prevent client-side path traversal. matrix-js-sdk fails to perform this validation.

Patches

Fixed in matrix-js-sdk 34.11.1.

Workarounds

None.

References

NVD description

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.