{"id":"CVE-2021-22871","url":"https://www.cyber-defence.io/tools/cve/CVE-2021-22871","generatedAt":"2026-10-27T20:21:05.806Z","title":"Revive Adserver before 5.1.0 permits any user with a manager account to store possibly malicious content in the URL website property, which is then displayed unsanitized in the affiliate-preview.php tag generation screen, leading to a persistent…","description":"Revive Adserver before 5.1.0 permits any user with a manager account to store possibly malicious content in the URL website property, which is then displayed unsanitized in the affiliate-preview.php tag generation screen, leading to a persistent cross-site scripting (XSS) vulnerability.","published":"2021-01-26T18:16:19.000Z","lastModified":"2026-06-17T03:37:55.000Z","status":"Modified","sourceIdentifier":"support@hackerone.com","cvss":{"version":"3.1","score":4.8,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N"},"cwe":["CWE-79"],"affected":["revive-adserver/revive adserver"],"epss":{"score":0.02149,"percentile":0.81993,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (2.15%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"http://packetstormsecurity.com/files/161070/Revive-Adserver-5.0.5-Cross-Site-Scripting-Open-Redirect.html","tags":["Third Party Advisory","VDB Entry"],"source":"support@hackerone.com"},{"url":"http://seclists.org/fulldisclosure/2021/Jan/60","tags":["Broken Link","Mailing List","Third Party Advisory"],"source":"support@hackerone.com"},{"url":"https://github.com/revive-adserver/revive-adserver/commit/62a2a0439","tags":["Patch","Third Party Advisory"],"source":"support@hackerone.com"},{"url":"https://github.com/revive-adserver/revive-adserver/commit/89b88ce26","tags":["Patch","Third Party Advisory"],"source":"support@hackerone.com"},{"url":"https://hackerone.com/reports/819362","tags":["Exploit","Third Party Advisory"],"source":"support@hackerone.com"},{"url":"https://www.revive-adserver.com/security/revive-sa-2021-001/","tags":["Vendor Advisory"],"source":"support@hackerone.com"},{"url":"http://packetstormsecurity.com/files/161070/Revive-Adserver-5.0.5-Cross-Site-Scripting-Open-Redirect.html","tags":["Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://seclists.org/fulldisclosure/2021/Jan/60","tags":["Broken Link","Mailing List","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/revive-adserver/revive-adserver/commit/62a2a0439","tags":["Patch","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/revive-adserver/revive-adserver/commit/89b88ce26","tags":["Patch","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://hackerone.com/reports/819362","tags":["Exploit","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.revive-adserver.com/security/revive-sa-2021-001/","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-22871","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}