GHSA-6263-X97C-C4GG matrix-js-sdk subject to impersonated messages due to permissive key forwarding

Impact An attacker cooperating with a malicious homeserver can construct messages appearing to have come from another person. Such messages will be marked with a grey shield on some platforms, but this may be missing in others. This attack is possible due to the matrix-js-sdk implementing a too...

CVE-2022-39249 Matrix Javascript SDK vulnerable to impersonation via forwarded Megolm sessions

Matrix Javascript SDK is the Matrix Client-Server SDK for JavaScript. Prior to version 19.7.0, an attacker cooperating with a malicious homeserver can construct messages appearing to have come from another person. Such messages will be marked with a grey shield on some platforms, but this may be...