cvedb.io
CVE-2025-66622
HIGH · CVSS 7.5
EPSS exploitation probability: 0%
Published 2025-12-09T16:18:21.747 · Last modified 2026-06-17T09:57:07.187

Summary

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.

Affected products

matrix — matrix-rust-sdk

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.