GHSA-xv83-x443-7rmw
HTML injection in search results via plaintext message highlighting
Quick fix
GHSA-xv83-x443-7rmw — matrix-react-sdk: upgrade to the fixed version with the command below.
npm install matrix-react-sdk@3.71.0Details
### Impact Plain text messages containing HTML tags are rendered as HTML in the search results. To exploit this, an attacker needs to trick a user into searching for a specific message containing an HTML injection payload.
Cross-site scripting is possible by including resources from `recaptcha.net` and `gstatic.com` which are included in the default CSP.
Thanks to [Cadence Ember](https://cadence.moe/) for finding the injection and to [S1m](https://github.com/p1gp1g/) for finding possible XSS vectors.
### Patches Version 3.71.0 of the SDK fixes the issue.
### Workarounds Restarting the client will clear the injection.
Are you affected?
Enter the version of the package you're using.
Affected packages
References
- https://github.com/matrix-org/matrix-react-sdk/security/advisories/GHSA-xv83-x443-7rmw[WEB]
- https://nvd.nist.gov/vuln/detail/CVE-2023-30609[ADVISORY]
- https://github.com/matrix-org/matrix-react-sdk/commit/bf182bc94556849d7acdfa0e5fdea2aa129ea826[WEB]
- https://github.com/matrix-org/matrix-react-sdk[PACKAGE]
- https://github.com/matrix-org/matrix-react-sdk/releases/tag/v3.71.0[WEB]