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CVE-2025-48937

4.9 · MEDIUM

matrix-rust-sdk is an implementation of a Matrix client-server library in Rust.

Published Jun 10, 2025CWE-290EPSS 0.37%

Overview

CVE-2025-48937 is a medium-severity vulnerability. It was published on June 10, 2025 and has a CVSS 3.1 base score of 4.9 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 4.9, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/matrix-org/matrix-rust-sdk/commit/13c1d2048286bbabf5e7bc6b015aafee98f04d55GitHubgithub.com/matrix-org/matrix-rust-sdk/commit/56980745b4f27f7dc72ac296e6aa003e5d92a75bGitHubgithub.com/matrix-org/matrix-rust-sdk/security/advisories/GHSA-x958-rvg6-956wRefspec.matrix.org/v1.14/client-server-api/#mmegolmv1aes-sha2

How CyberStrike helps

Frequently asked questions

What is CVE-2025-48937?

CVE-2025-48937 is a medium-severity vulnerability. It was published on June 10, 2025 and has a CVSS 3.1 base score of 4.9 (MEDIUM).

How severe is CVE-2025-48937?

This vulnerability has a CVSS 3.1 base score of 4.9, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2025-48937?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2025-48937?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2025-48937 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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