{"cve":"CVE-2024-42347","nvd":{"published":"2024-08-06T18:15:57.103","modified":"2026-06-17T07:49:18.140","status":"Analyzed","description":"matrix-react-sdk  is a react-based SDK for inserting a Matrix chat/voip client into a web page. A malicious homeserver could manipulate a user's account data to cause the client to enable URL previews in end-to-end encrypted rooms, in which case any URLs in encrypted messages would be sent to the server. This was patched in matrix-react-sdk 3.105.0. Deployments that trust their homeservers, as well as closed federations of trusted servers, are not affected. Users are advised to upgrade. There are no known workarounds for this vulnerability.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","score":6.5},"cwes":["CWE-359"],"references":["https://github.com/matrix-org/matrix-react-sdk/releases/tag/v3.105.1","https://github.com/matrix-org/matrix-react-sdk/security/advisories/GHSA-f83w-wqhc-cfp4"],"products":["matrix:matrix-react-sdk"],"source":"nvd","synced_at":"2026-10-19T21:53:51.317825789+00:00"},"epss":{"cve":"CVE-2024-42347","score":0.00427,"percentile":0.37008,"date":"2026-11-01"},"kev":null,"osv":[{"id":"GHSA-f83w-wqhc-cfp4","url":"https://osv.dev/vulnerability/GHSA-f83w-wqhc-cfp4","summary":"Matrix SDK for React's URL preview setting for a room is controllable by the homeserver","modified":"2024-08-08T16:38:00Z","packages":[{"ecosystem":"npm","name":"matrix-react-sdk","purl":"pkg:npm/matrix-react-sdk","ranges":["<3.105.1"],"fixed":["3.105.1"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}