https://vulnerability.circl.lu/rss/recent/all/10 Most recent entries from all 2026-09-29T06:32:27.999692+00:00 Vulnerability-Lookup info@circl.lu python-feedgen Contains only the most 10 recent entries. https://vulnerability.circl.lu/vuln/fkie_cve-2026-45057 fkie_cve-2026-45057 2026-09-29T06:32:28.047247+00:00

matrix-sdk-ui provides GUI-centric utilities on top of matrix-rust-sdk. The message edit validation logic in the `matrix-sdk-ui` crate prior to 0.17.0 is missing a check: when replacing an encrypted event, the replacement event itself is not required to be encrypted. This enables a malicious homeserver administrators (or actors with equivalent power) to impersonate or spoof messages as if they were sent by a victim user. `matrix-sdk-ui` 0.17.0 fixes the message edit validation logic to align with the algorithm for replacement events[^1] described in the Matrix specification. No known workarounds are available.

 https://vulnerability.circl.lu/vuln/ghsa-h97m-27fx-42rx GHSA-h97m-27fx-42rx — matrix-sdk-ui: Incomplete edit validation 2026-09-29T06:32:28.047346+00:00

Affected: crates.io: matrix-sdk-ui

### Impact The message edit validation logic in the `matrix-sdk-ui` crate before 0.16.1 is missing a check: when replacing an encrypted event, the replacement event itself is not required to be encrypted. This enables a malicious homeserver administrator (or an actor with equivalent power) to impersonate or spoof messages as if they were sent by a victim user.

### Patches `matrix-sdk-ui` 0.16.1 fixes the message edit validation logic to align with the algorithm for replacement events[^1] described in the Matrix specification.

### Workarounds N/A

### References * Pull request: https://github.com/matrix-org/matrix-rust-sdk/pull/6454

### For more information If you have any questions or comments about this advisory, please email us at [security at matrix.org](mailto:security@matrix.org).

[^1]: https://spec.matrix.org/unstable/client-server-api/#validity-of-replacement-events

 https://vulnerability.circl.lu/vuln/rustsec-2026-0158 RUSTSEC-2026-0158 — Incomplete message edit validation in matrix-sdk-ui 2026-09-29T06:32:28.047417+00:00

Affected: crates.io: matrix-sdk-ui

The message edit validation logic in the matrix-sdk-ui crate before 0.16.1 is missing a check: when replacing an encrypted event, the replacement event itself is not required to be encrypted. This enables a malicious homeserver administrator (or an actor with equivalent power) to impersonate or spoof messages as if they were sent by a victim user.