We are issuing security releases of matrix-js-sdk and matrix-react-sdk to patch High severity vulnerabilities.
Affected clients include Element Web/Desktop and Cinny.
We advise users of those clients to upgrade immediately. More details in our post https://matrix.org/blog/2022/08/31/security-releases-matrix-js-sdk-19-4-0-and-matrix-react-sdk-3-53-0