Sandbox Breakout

Overview In matrix-react-sdk before version 3.15.0 the user content sandbox can be abused to trick users into opening unexpected documents. The content is opened with a blob origin that cannot access Matrix user data, so messages and secrets are not at risk. Recommendation Upgrade to version 3.15...

matrix-react-skin (>=0.0.1 <=0.0.2), vector-web (=0.3.0) potentially affected by CVE-2021-21320 via matrix-react-sdk (>=0.0.1 <=0.2.0)

matrix-react-sdk NPM version =0.0.1, =0.0.1, =0.0.2 - vector-web =0.3.0 Source cves: CVE-2021-21320 Source advisory: OSV:GHSA-52MQ-6JCV-J79X...

CVE-2021-21320 User content sandbox can be confused into opening arbitrary documents

matrix-react-sdk is an npm package which is a Matrix SDK for React Javascript. In matrix-react-sdk before version 3.15.0, the user content sandbox can be abused to trick users into opening unexpected documents. The content is opened with a blob origin that cannot access Matrix user data, so...

CVE-2021-21320

CVE-2021-21320 affects the matrix-react-sdk (Matrix React SDK) before version 3.15.0, where the user content sandbox could be abused to trigger opening unexpected documents. The issue involves a blob-origin handling scenario that, per sources, cannot access Matrix user data, so messages and secre...