CVE-2025-59047: matrix-sdk-base has panic in the `RoomMember::normalized_power_level()` method

Severity: low (CVSS 2.7 v4.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-09-11 · updated 2026-06-17
Weakness: CWE-682

Description

matrix-sdk-base is the base component to build a Matrix client library. In matrix-sdk-base before 0.14.1, calling the `RoomMember::normalized_power_level()` method can cause a panic if a room member has a power level of `Int::Min`. The issue is fixed in matrix-sdk-base 0.14.1. The affected method isn’t used internally, so avoiding calling `RoomMember::normalized_power_level()` prevents the panic.

Affected products

matrix-org matrix-rust-sdk: before 0.14.1

References

https://github.com/matrix-org/matrix-rust-sdk/commit/ce3b67f801446387972ff120e907ca828a9f1207
https://github.com/matrix-org/matrix-rust-sdk/pull/5635
https://github.com/matrix-org/matrix-rust-sdk/releases/tag/matrix-sdk-base-0.14.1
https://github.com/matrix-org/matrix-rust-sdk/security/advisories/GHSA-qhj8-q5r6-8q6j

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