1.3Low
CVE-2025-66622matrix-sdk-base is vulnerable to DoS via custom m.room.join_rules event values
Description
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.
Weakness (CWE):
CWE-755
Data: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Published as the sources state it, in English.
Affected products and versions
| Vendor | Product | Versions | |
|---|---|---|---|
| matrix | matrix-rust-sdk | < 0.16.0 | |
| matrix-org | matrix-rust-sdk | < 0.16.0 |
References and patches
- https://github.com/matrix-org/matrix-rust-sdk/security/advisories/GHSA-jj6p-3m75-g2p3 PatchVendor Advisory
- https://github.com/matrix-org/matrix-rust-sdk/pull/5924 Issue TrackingPatch
- https://github.com/matrix-org/matrix-rust-sdk/commit/4ea0418abefab2aa93f8851a4d39c723e703e6b0 Patch
- https://rustsec.org/advisories/RUSTSEC-2025-0135.html Third Party Advisory
CPE matches (NVD) (1)
cpe:2.3:a:matrix:matrix-rust-sdk:*:*:*:*:*:*:*:*< 0.16.0