Vulnerability in Matrix-org Matrix-rust-sdk
CVE-2025-48937
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 operat…
EPSS: 0.003 (50.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 4.9 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N.
Affected products
- Matrix-org Matrix-rust-sdk — versions >= 0.8.0, < 0.11.1
Weakness classification (CWE)
References
- https://github.com/matrix-org/matrix-rust-sdk/security/advisories/GHSA-x958-rvg6-956w (x_refsource_CONFIRM)
- https://github.com/matrix-org/matrix-rust-sdk/commit/13c1d2048286bbabf5e7bc6b015aafee98f04d55 (x_refsource_MISC)
- https://github.com/matrix-org/matrix-rust-sdk/commit/56980745b4f27f7dc72ac296e6aa003e5d92a75b (x_refsource_MISC)
- https://spec.matrix.org/v1.14/client-server-api/#mmegolmv1aes-sha2 (x_refsource_MISC)
Frequently asked questions
- What is CVE-2025-48937?
- CVE-2025-48937 is a medium-severity vulnerability in Matrix-org Matrix-rust-sdk, classified under Authentication Bypass by Spoofing. CVSS score: 4.9/10. Published 2025-06-10.
- How severe is CVE-2025-48937?
- Medium severity. CVSS v3 base score is 4.9 out of 10.