{"cve":"CVE-2023-28103","nvd":{"published":"2023-03-28T21:15:10.887","modified":"2026-06-17T05:46:52.690","status":"Modified","description":"matrix-react-sdk is a Matrix chat protocol SDK for React Javascript. In certain configurations, data sent by remote servers containing special strings in key locations could cause modifications of the `Object.prototype`, disrupting matrix-react-sdk functionality, causing denial of service and potentially affecting program logic. This is fixed in matrix-react-sdk 3.69.0 and users are advised to upgrade. There are no known workarounds for this vulnerability. Note this advisory is distinct from GHSA-2x9c-qwgf-94xr which refers to a similar issue.","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-react-sdk/security/advisories/GHSA-6g43-88cp-w5gv","https://matrix.org/blog/2023/03/28/security-releases-matrix-js-sdk-24-0-0-and-matrix-react-sdk-3-69-0","https://github.com/matrix-org/matrix-react-sdk/security/advisories/GHSA-6g43-88cp-w5gv","https://matrix.org/blog/2023/03/28/security-releases-matrix-js-sdk-24-0-0-and-matrix-react-sdk-3-69-0"],"products":["matrix-react-sdk_project:matrix-react-sdk"],"source":"nvd","synced_at":"2026-10-19T21:37:48.383111019+00:00"},"epss":{"cve":"CVE-2023-28103","score":0.00712,"percentile":0.53623,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-6g43-88cp-w5gv","url":"https://osv.dev/vulnerability/GHSA-6g43-88cp-w5gv","summary":"Prototype pollution in matrix-react-sdk ","modified":"2026-09-10T03:49:52.704830765Z","packages":[{"ecosystem":"npm","name":"matrix-react-sdk","purl":"pkg:npm/matrix-react-sdk","ranges":["<3.69.0"],"fixed":["3.69.0"]}]}],"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."]}