Vulnerability GHSA-jj6p-3m75-g2p3
Low Risk
LOW RISK
CVSS Score: 3.0
Score Range: < 4.0
Low severity vulnerabilities (CVSS < 4.0). Hygiene issues that can accumulate but pose lower immediate risk.
10 months ago
December 08, 2025 at 10:07 PM UTC
matrix-sdk-base denial of service via custom m.room.join_rules event values
0.1.0 - 0.15.0
0.1.0 - 0.15.0
Summary
matrix-sdk-base denial of service via custom m.room.join_rules event values
Details
The matrix-sdk-base crate is 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.
Patches
The issue is fixed in matrix-sdk-base 0.16.0.
Workarounds
Users can leave affected rooms on another client to mitigate the issue.
References
The issue was fixed in https://github.com/matrix-org/matrix-rust-sdk/pull/5924.
Related Vulnerabilities
Other vulnerabilities affecting the same packages
Unknown
10 months ago
matrix-sdk-base: Denial of service due to custom `m.room.join_rules` events
0.1.0 - 0.15.0 RUSTSEC-2025-0135
0.1.0 - 0.15.0 RUSTSEC-2025-0135
Low Risk
1 year ago
matrix-sdk-base: Panic in the `RoomMember::normalized_power_level()` method
0.1.0 - 0.14.0 GHSA-qhj8-q5r6-8q6j
0.1.0 - 0.14.0 GHSA-qhj8-q5r6-8q6j
Unknown
1 year ago
matrix-sdk-base: Panic in the `RoomMember::normalized_power_level()` method
0.1.0 - 0.14.0 RUSTSEC-2025-0000
0.1.0 - 0.14.0 RUSTSEC-2025-0000
Unknown
1 year ago
matrix-sdk-base: Panic in the `RoomMember::normalized_power_level()` method
0.1.0 - 0.14.0 RUSTSEC-2025-0065
0.1.0 - 0.14.0 RUSTSEC-2025-0065
Impacted packages
Timeline
Published
10 months ago
December 08, 2025 at 10:07 PM UTC
Fixed (0.16.0)
10 months ago
December 04, 2025 at 09:50 AM UTC
Last Modified
10 months ago
December 09, 2025 at 07:36 PM UTC