CVE-2025-66622

matrix-sdk-base is the base component to build a Matrix client library. Versions 0.14.1 and prior are unable to handle responses that include custom m.room.join_rules values due to a serialization bug. This can be exploited to cause a denial-of-service condition, if a user is invited to a room with non-standard join rules, the crate's sync process will stall, preventing further processing for all rooms. This is fixed in version 0.16.0.

CVSS

No CVSS.

References

Link	Resource
https://github.com/matrix-org/matrix-rust-sdk/commit/4ea0418abefab2aa93f8851a4d39c723e703e6b0
https://github.com/matrix-org/matrix-rust-sdk/pull/5924
https://github.com/matrix-org/matrix-rust-sdk/security/advisories/GHSA-jj6p-3m75-g2p3
https://rustsec.org/advisories/RUSTSEC-2025-0135.html

Configurations

No configuration.

History

09 Dec 2025, 16:18

Type	Values Removed	Values Added
New CVE

Information

Published : 2025-12-09 16:18

Updated : 2025-12-09 18:36

NVD link : CVE-2025-66622

Mitre link : CVE-2025-66622

CVE.ORG link : CVE-2025-66622

JSON object : View

Products Affected

No product.

CWE

CWE-755

Improper Handling of Exceptional Conditions

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