{"id":"CVE-2021-24817","aliases":["EUVD-2021-11729","GHSA-4fr3-cmqh-r8mx"],"status":"published","title":"Ultimate NoFollow \u003c= 1.4.8 - Contributor+ Stored Cross-Site Scripting","description":"The Ultimate NoFollow WordPress plugin through 1.4.8 does not sanitise and escape the href attribute of its shortcodes, allowing users with a role as low as contributor to perform Cross-Site Scripting attacks","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":0.00624,"percentile":0.50386,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-79"],"published":"2021-12-13T10:40:58Z","modified":"2026-06-17T03:40:57Z","products":[{"vendor":"ultimate_nofollow_project","product":"ultimate_nofollow"},{"vendor":"unknown","product":"ultimate nofollow"}],"references":[{"url":"https://wpscan.com/vulnerability/ccb27d2e-2d2a-40d3-ba7e-bcd5e5012a9a","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-24817"},{"url":"https://github.com/advisories/GHSA-4fr3-cmqh-r8mx"}],"sources":{"cve":[{"id":"CVE-2021-24817","title":"Ultimate NoFollow \u003c= 1.4.8 - Contributor+ Stored Cross-Site Scripting","description":"The Ultimate NoFollow WordPress plugin through 1.4.8 does not sanitise and escape the href attribute of its shortcodes, allowing users with a role as low as contributor to perform Cross-Site Scripting attacks","status":"published","published":"2021-12-13T10:40:58Z","modified":"2024-08-03T19:42:17.351Z","cwes":["CWE-79"],"updated_at":"2026-11-02T14:33:05.331617Z"}],"euvd":[{"id":"EUVD-2021-11729","description":"The Ultimate NoFollow WordPress plugin through 1.4.8 does not sanitise and escape the href attribute of its shortcodes, allowing users with a role as low as contributor to perform Cross-Site Scripting attacks","status":"published","published":"2021-12-13T10:40:58Z","modified":"2024-08-03T19:42:17Z","updated_at":"2026-11-03T03:24:55.867627Z"}],"ghsa":[{"id":"GHSA-4fr3-cmqh-r8mx","title":"The Ultimate NoFollow WordPress plugin through 1.4.8 does not sanitise and escape the href...","description":"The Ultimate NoFollow WordPress plugin through 1.4.8 does not sanitise and escape the href attribute of its shortcodes, allowing users with a role as low as contributor to perform Cross-Site Scripting attacks","status":"published","published":"2021-12-14T00:01:04Z","modified":"2023-02-01T05:07:02Z","cwes":["CWE-79"],"updated_at":"2026-11-02T14:50:28.399252Z"}],"nvd":[{"id":"CVE-2021-24817","description":"The Ultimate NoFollow WordPress plugin through 1.4.8 does not sanitise and escape the href attribute of its shortcodes, allowing users with a role as low as contributor to perform Cross-Site Scripting attacks","status":"published","published":"2021-12-13T11:15:08.75Z","modified":"2026-06-17T03:40:57.53Z","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":"2026-11-02T14:07:02.189991Z"}]}}