{"cve":"CVE-2023-28427","nvd":{"published":"2023-03-28T21:15:11.057","modified":"2026-06-17T05:47:41.563","status":"Modified","description":"matrix-js-sdk is a Matrix messaging protocol Client-Server SDK for JavaScript. In versions prior to 24.0.0 events sent with special strings in key places can temporarily 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 vulnerability is distinct from GHSA-rfv9-x7hh-xc32 which covers a similar issue. The issue has been patched in matrix-js-sdk 24.0.0 and 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:N/UI:N/S:U/C:N/I:L/A:H","score":8.2},"cwes":["CWE-1321"],"references":["https://github.com/matrix-org/matrix-js-sdk/security/advisories/GHSA-mwq8-fjpf-c2gr","https://lists.debian.org/debian-lts-announce/2023/04/msg00027.html","https://matrix.org/blog/2023/03/28/security-releases-matrix-js-sdk-24-0-0-and-matrix-react-sdk-3-69-0","https://security.gentoo.org/glsa/202305-36","https://www.debian.org/security/2023/dsa-5392"],"products":["matrix:javascript_sdk"],"source":"nvd","synced_at":"2026-10-19T21:37:48.383111019+00:00"},"epss":{"cve":"CVE-2023-28427","score":0.01185,"percentile":0.67813,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-mwq8-fjpf-c2gr","url":"https://osv.dev/vulnerability/GHSA-mwq8-fjpf-c2gr","summary":"Prototype pollution in matrix-js-sdk (part 2)","modified":"2026-09-10T03:49:52.851933001Z","packages":[{"ecosystem":"npm","name":"matrix-js-sdk","purl":"pkg:npm/matrix-js-sdk","ranges":["<24.0.0"],"fixed":["24.0.0"]}]}],"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."]}