CVE-2021-21320: low-severity vulnerability in matrix-org matrix-react-sdk
User content sandbox can be confused into opening arbitrary documents
Published · Updated
8Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 2.6epss 0.9%
exploitation probability
0.9%top 41% of all CVEs
observed exploitation
nono source reports it
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 messages and secrets are not at risk. This has been fixed in version 3.15.0.
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:L/A:N
Affected products
matrix-org · matrix-react-sdkRelated CVEs — matrix-org matrix-react-sdk
In the same product, most dangerous first.
CVE-2022-36060HIGHPrototype pollution in matrix-react-sdkEPSS 0.9%CVE-2023-28103HIGHPrototype pollution in matrix-react-sdkEPSS 0.7%CVE-2024-47824HIGHMalicious homeservers can steal message keys when the matrix-react-sdk user invites another user to a roomEPSS 0.7%CVE-2023-30609MEDIUMmatrix-react-sdk vulnerable to HTML injection in search results via plaintext message highlightingEPSS 0.6%CVE-2023-37259MEDIUMCross site scripting in Export Chat featureEPSS 0.5%CVE-2024-42347HIGHURL preview setting for a room is controllable by the homeserver in matrix-react-sdkEPSS 0.4%