CVE-2026-45056: Authentication Bypass by Spoofing

matrix-sdk-crypto is a no-network-IO implementation of a state machine that handles end-to-end encryption for Matrix clients. Starting in version 0.12.0 and prior to version 0.17.0, the matrix-sdk-crypto crate was missing a check for the user ID when decrypting an Olm-encrypted event containing t...

PT-2026-46306

Name of the Vulnerable Software and Affected Versions matrix-sdk-ui versions prior to 0.16.1 Description The message edit validation logic is missing a check when replacing an encrypted event, as the replacement event is not required to be encrypted. This allows a malicious homeserver administrat...

RUSTSEC-2025-0041 matrix-sdk-crypto vulnerable to encrypted event sender spoofing by homeserver administrator

matrix-sdk-crypto versions 0.8.0 up to and including 0.11.0 does not correctly validate the sender of an encrypted event. Accordingly, a malicious homeserver operator can modify events served to clients, making those events appear to the recipient as if they were sent by another user. Although th...

CVE-2025-48937

matrix-rust-sdk is an implementation of a Matrix client-server library in Rust. matrix-sdk-crypto since version 0.8.0 and up to 0.11.0 does not correctly validate the sender of an encrypted event. Accordingly, a malicious homeserver operator can modify events served to clients, making those event...

CVE-2025-48937: Authentication Bypass by Spoofing

matrix-rust-sdk is an implementation of a Matrix client-server library in Rust. matrix-sdk-crypto since version 0.8.0 and up to 0.11.0 does not correctly validate the sender of an encrypted event. Accordingly, a malicious homeserver operator can modify events served to clients, making those event...