Matrix Javascript SDK any version

The olm_session_describe function in Matrix libolm before 3.2.7 is vulnerable to a buffer overflow. The Olm session object represents a cryptographic channel between two parties. Therefore, its state is partially controllable by the remote party of the channel. Attackers can construct a crafted sequence of messages to manipulate the state of the receiver's session in such a way that, for some buffer sizes, a buffer overflow happens on a call to olm_session_describe. Furthermore, safe buffer sizes were undocumented. The overflow content is partially controllable by the attacker and limited to ASCII spaces and digits. The known affected products are Element Web And SchildiChat Web.

Matrix JavaScript SDK vulnerable to key/device identifier confusion in SAS verification

Matrix Javascript SDK vulnerable to Olm/Megolm protocol confusion

Prototype pollution in matrix-js-sdk

Prototype pollution in matrix-js-sdk

Matrix Javascript SDK vulnerable to impersonation via forwarded Megolm sessions

A logic error in the room key sharing functionality of matrix-js-sdk (aka Matrix Javascript SDK) before 12.4.1 allows a malicious Matrix homeserver present in an encrypted room to steal room encryption keys (via crafted Matrix protocol messages) that were originally sent by affected Matrix clients participating in that room. This allows the homeserver to decrypt end-to-end encrypted messages sent by affected clients.

Matrix Javascript SDK improper beacon events can cause availability issues

matrix-js-sdk vulnerable to invisible eavesdropping in group calls

A room with itself as a its predecessor will freeze matrix-js-sdk