RUSTSEC-2026-0159 Sender-binding gaps in to-device messages

The matrix-sdk-crypto crate before 0.16.1 is missing a check for the sender's user ID when decrypting an Olm-encrypted to-device message containing the senderdevicekeys property. This could be exploited to spoof the sender of an encrypted to-device message, but only if the attacker colludes with ...

PT-2026-46305

Name of the Vulnerable Software and Affected Versions matrix-sdk-crypto versions prior to 0.16.1 Description The matrix-sdk-crypto crate fails to verify the sender's user ID during the decryption of Olm-encrypted to-device messages that include the sender device keys property. This flaw allows an...

CVE-2025-48937 matrix-sdk-crypto vulnerable to sender of encrypted events being spoofed by homeserver administrator

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...