Vulnerability Description
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.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- https://github.com/matrix-org/matrix-rust-sdk/commit/13c1d2048286bbabf5e7bc6b015
- https://github.com/matrix-org/matrix-rust-sdk/commit/56980745b4f27f7dc72ac296e6a
- https://github.com/matrix-org/matrix-rust-sdk/security/advisories/GHSA-x958-rvg6
- https://spec.matrix.org/v1.14/client-server-api/#mmegolmv1aes-sha2
FAQ
What is CVE-2025-48937?
CVE-2025-48937 is a vulnerability with a CVSS score of 4.9 (MEDIUM). 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. Acc...
How severe is CVE-2025-48937?
CVE-2025-48937 has been rated MEDIUM with a CVSS base score of 4.9/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-48937?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.