{"id":"CVE-2021-20665","aliases":["EUVD-2021-8083","GHSA-7ppf-q9mq-qg3g"],"status":"published","title":"Cross-site scripting vulnerability in in Add asset screen of Contents field of Movable Type 7 r...","description":"Cross-site scripting vulnerability in in Add asset screen of Contents field of Movable Type 7 r.4705 and earlier (Movable Type 7 Series), Movable Type Advanced 7 r.4705 and earlier (Movable Type Advanced 7 Series), Movable Type Premium 1.39 and earlier, and Movable Type Premium Advanced 1.39 and earlier allows remote attackers to inject an arbitrary script via unspecified vectors.","severity":{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.00839,"percentile":0.5812,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-79"],"published":"2021-03-05T09:20:21Z","modified":"2026-06-17T03:34:12Z","products":[{"vendor":"movabletype","product":"movable_type"},{"vendor":"movabletype","product":"movable_type_advanced"},{"vendor":"movabletype","product":"movable_type_premium"},{"vendor":"movabletype","product":"movable_type_premium_advanced"},{"vendor":"six apart ltd.","product":"movable type"}],"references":[{"url":"https://jvn.jp/en/jp/JVN66542874/index.html","tags":["x_refsource_MISC","x_transferred","Third Party Advisory"]},{"url":"https://movabletype.org/news/2021/02/mt-760-676-released.html","tags":["x_refsource_MISC","x_transferred","Release Notes","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-20665"},{"url":"https://github.com/advisories/GHSA-7ppf-q9mq-qg3g"}],"sources":{"cve":[{"id":"CVE-2021-20665","description":"Cross-site scripting vulnerability in in Add asset screen of Contents field of Movable Type 7 r.4705 and earlier (Movable Type 7 Series), Movable Type Advanced 7 r.4705 and earlier (Movable Type Advanced 7 Series), Movable Type Premium 1.39 and earlier, and Movable Type Premium Advanced 1.39 and earlier allows remote attackers to inject an arbitrary script via unspecified vectors.","status":"published","published":"2021-03-05T09:20:21Z","modified":"2024-08-03T17:45:45.209Z","updated_at":"2026-11-02T14:32:55.905855Z"}],"euvd":[{"id":"EUVD-2021-8083","description":"Cross-site scripting vulnerability in in Add asset screen of Contents field of Movable Type 7 r.4705 and earlier (Movable Type 7 Series), Movable Type Advanced 7 r.4705 and earlier (Movable Type Advanced 7 Series), Movable Type Premium 1.39 and earlier, and Movable Type Premium Advanced 1.39 and earlier allows remote attackers to inject an arbitrary script via unspecified vectors.","status":"published","published":"2021-03-05T09:20:21Z","modified":"2024-08-03T17:45:45Z","updated_at":"2026-11-03T03:25:08.33351Z"}],"ghsa":[{"id":"GHSA-7ppf-q9mq-qg3g","title":"Cross-site scripting vulnerability in in Add asset screen of Contents field of Movable Type 7 r...","description":"Cross-site scripting vulnerability in in Add asset screen of Contents field of Movable Type 7 r.4705 and earlier (Movable Type 7 Series), Movable Type Advanced 7 r.4705 and earlier (Movable Type Advanced 7 Series), Movable Type Premium 1.39 and earlier, and Movable Type Premium Advanced 1.39 and earlier allows remote attackers to inject an arbitrary script via unspecified vectors.","status":"published","published":"2022-05-24T17:43:44Z","modified":"2023-01-29T05:05:56Z","cwes":["CWE-79"],"updated_at":"2026-11-02T14:45:54.702484Z"}],"nvd":[{"id":"CVE-2021-20665","description":"Cross-site scripting vulnerability in in Add asset screen of Contents field of Movable Type 7 r.4705 and earlier (Movable Type 7 Series), Movable Type Advanced 7 r.4705 and earlier (Movable Type Advanced 7 Series), Movable Type Premium 1.39 and earlier, and Movable Type Premium Advanced 1.39 and earlier allows remote attackers to inject an arbitrary script via unspecified vectors.","status":"published","published":"2021-03-05T10:15:12.847Z","modified":"2026-06-17T03:34:12.75Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:N/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:06:50.399901Z"}]}}