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CVE-2024-53867

4.3 · MEDIUM

Synapse is an open-source Matrix homeserver.

Published Dec 3, 2024CWE-497EPSS 0.44%

Overview

CVE-2024-53867 is a medium-severity vulnerability. It was published on December 3, 2024 and has a CVSS 3.1 base score of 4.3 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 4.3, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical description

Synapse is an open-source Matrix homeserver. The Sliding Sync feature on Synapse versions between 1.113.0rc1 and 1.120.0 can leak partial room state changes to users no longer in a room. Non-state events, like messages, are unaffected. This vulnerability is fixed in 1.120.1.

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/element-hq/synapse/security/advisories/GHSA-56w4-5538-8v8hGitHubgithub.com/matrix-org/matrix-spec-proposals/pull/4186

How CyberStrike helps

Frequently asked questions

What is CVE-2024-53867?

CVE-2024-53867 is a medium-severity vulnerability. It was published on December 3, 2024 and has a CVSS 3.1 base score of 4.3 (MEDIUM).

How severe is CVE-2024-53867?

This vulnerability has a CVSS 3.1 base score of 4.3, 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-2024-53867?

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-2024-53867?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2024-53867 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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