CVE-2025-66622
Last modified
CVE-2025-66622 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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. EPSS estimates a 0.34% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Matrix | Matrix-Rust-Sdk | < 0.16.0 |
References
- https://github.com/matrix-org/matrix-rust-sdk/pull/5924Issue Tracking, Patch
- https://github.com/matrix-org/matrix-rust-sdk/security/advisories/GHSA-jj6p-3m75-g2p3Patch, Vendor Advisory
- https://rustsec.org/advisories/RUSTSEC-2025-0135.htmlThird Party Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
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