CVE-2025-66622
Rust vulnerability analysis and mitigation

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.


SourceNVD

Related Rust vulnerabilities:

CVE ID

Severity

Score

Technologies

Component name

CISA KEV exploit

Has fix

Published date

CVE-2025-65807HIGH8.4
  • RustRust
  • sd
NoNoDec 10, 2025
CVE-2025-66627HIGH7.8
  • RustRust
  • wasmi
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CVE-2025-67487MEDIUM5.5
  • RustRust
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CVE-2025-66622LOW1.3
  • RustRust
  • matrix-sdk-base
NoYesDec 09, 2025
RUSTSEC-2025-0135N/AN/A
  • RustRust
  • matrix-sdk-base
NoYesDec 08, 2025

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