CVE-2025-48937 MEDIUM

CVE-2025-48937: matrix-sdk-crypto vulnerable to sender of encrypted events being spoofed by homeserver administrator

Vendor Matrix-Org
Product matrix-rust-sdk
Weakness CWE-290
Published June 10, 2025
Last update June 10, 2025
View on NVD All CVEs

CVSS base score

4.9/10
Attack vector Network
Attack complexity Low
Privileges required High
User interaction None
Confidentiality None
Integrity High

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N

What the vulnerability does

01Description

matrix-rust-sdk is an implementation of a Matrix client-server library in Rust. matrix-sdk-crypto since version 0.8.0 and up to 0.11.0 does not correctly validate the sender of an encrypted event. Accordingly, a malicious homeserver operator can modify events served to clients, making those events appear to the recipient as if they were sent by another user. This vulnerability is fixed in 0.11.1 and 0.12.0.

Key dates

02Disclosure timeline

June 10, 2025 CVE published
June 10, 2025 Record updated