{"id":"CVE-2021-40509","aliases":["EUVD-2021-27685","GHSA-hfxg-ph49-2mw5"],"status":"published","title":"ViewCommon.java in JForum2 2.7.0 allows XSS via a user signature.","description":"ViewCommon.java in JForum2 2.7.0 allows XSS via a user signature.","severity":{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-11","score":0.00958,"percentile":0.61896,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-79"],"published":"2021-09-04T19:20:00Z","modified":"2026-06-17T04:07:03Z","products":[{"vendor":"jforum","product":"jforum"}],"references":[{"url":"http://packetstormsecurity.com/files/164045/jforum-2.7.0-Cross-Site-Scripting.html","tags":["x_refsource_MISC","x_transferred","Third Party Advisory"]},{"url":"https://lists.openwall.net/full-disclosure/2021/09/03/7","tags":["x_refsource_MISC","x_transferred","Exploit","Mailing List","Third Party Advisory"]},{"url":"https://sourceforge.net/p/jforum2/code/934/","tags":["x_refsource_MISC","x_transferred","Patch","Third Party Advisory"]},{"url":"http://seclists.org/fulldisclosure/2021/Sep/13","tags":["mailing-list","x_refsource_FULLDISC","x_transferred","Mailing List","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-40509"},{"url":"https://github.com/advisories/GHSA-hfxg-ph49-2mw5"}],"sources":{"cve":[{"id":"CVE-2021-40509","description":"ViewCommon.java in JForum2 2.7.0 allows XSS via a user signature.","status":"published","published":"2021-09-04T19:20:00Z","modified":"2024-08-04T02:44:10.849Z","updated_at":"2026-11-02T14:33:01.495293Z"}],"euvd":[{"id":"EUVD-2021-27685","description":"ViewCommon.java in JForum2 2.7.0 allows XSS via a user signature.","status":"published","published":"2021-09-04T19:20:00Z","modified":"2024-08-04T02:44:10Z","updated_at":"2026-11-03T03:24:20.264881Z"}],"ghsa":[{"id":"GHSA-hfxg-ph49-2mw5","title":"ViewCommon.java in JForum2 2.7.0 allows XSS via a user signature.","description":"ViewCommon.java in JForum2 2.7.0 allows XSS via a user signature.","status":"published","published":"2022-05-24T19:13:01Z","modified":"2023-01-30T05:01:53Z","cwes":["CWE-79"],"updated_at":"2026-11-02T14:46:30.744651Z"}],"nvd":[{"id":"CVE-2021-40509","description":"ViewCommon.java in JForum2 2.7.0 allows XSS via a user signature.","status":"published","published":"2021-09-04T20:15:07.42Z","modified":"2026-06-17T04:07:03.933Z","cvss":[{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":3.5,"vector":"AV:N/AC:M/Au:S/C:N/I:P/A:N","level":"low","assessor":"primary"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:06:58.05696Z"}]}}