CVE-2022-39236

Matrix Javascript SDK is the Matrix Client-Server SDK for JavaScript.
Starting with version 17.1.0-rc.1, improperly formed beacon events can
disrupt or impede the matrix-js-sdk from functioning properly, potentially
impacting the consumer’s ability to process data safely. Note that the
matrix-js-sdk can appear to be operating normally but be excluding or
corrupting runtime data presented to the consumer. This is patched in
matrix-js-sdk v19.7.0. Redacting applicable events, waiting for the sync
processor to store data, and restarting the client are possible
workarounds. Alternatively, redacting the applicable events and clearing
all storage will fix the further perceived issues. Downgrading to an
unaffected version, noting that such a version may be subject to other
vulnerabilities, will additionally resolve the issue.