{"id":"CVE-2026-21663","state":"PUBLISHED","title":"HackerOne community member Patrick Lang (7yr) has reported a reflected XSS vulnerability in the banner-acl.php script of Revive Adserver. An attacker can craft a specific URL that ","description":"HackerOne community member Patrick Lang (7yr) has reported a reflected XSS vulnerability in the banner-acl.php script of Revive Adserver. An attacker can craft a specific URL that includes an HTML payload in a parameter. If a logged in administrator visits the URL, the HTML is sent to the browser and malicious scripts would be executed.","publishedAt":"2026-01-20T20:48:47.974Z","updatedAt":"2026-01-21T20:42:21.072Z","severity":{"score":6.1,"label":"Medium","version":"3.0","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","source":"hackerone"},"assigner":"hackerone","products":["Revive Revive Adserver"],"affected":[{"vendor":"Revive","product":"Revive Adserver","defaultStatus":"unaffected","versions":[{"version":"6","status":"affected","lessThanOrEqual":"6.0.4","versionType":"semver"}]}],"references":["https://hackerone.com/reports/3473696"],"weaknesses":["CWE-79"],"ingestedAt":"2026-10-29T20:11:10.572Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/21xxx/CVE-2026-21663.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-21663","state":"PUBLISHED","datePublished":"2026-01-20T20:48:47.974Z","dateUpdated":"2026-01-21T20:42:21.072Z","assignerShortName":"hackerone","assignerOrgId":"36234546-b8fa-4601-9d6f-f4e334aa8ea1","dateReserved":"2026-01-02T15:00:02.870Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"HackerOne community member Patrick Lang (7yr) has reported a reflected XSS vulnerability in the banner-acl.php script of Revive Adserver. An attacker can craft a specific URL that includes an HTML payload in a parameter. If a logged in administrator visits the URL, the HTML is sent to the browser and malicious scripts would be executed."}],"affected":[{"vendor":"Revive","product":"Revive Adserver","defaultStatus":"unaffected","versions":[{"version":"6","status":"affected","lessThanOrEqual":"6.0.4","versionType":"semver"}]}],"references":[{"url":"https://hackerone.com/reports/3473696"}],"metrics":[{"cvssV3_0":{"version":"3.0","vectorString":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","baseScore":6.1,"baseSeverity":"MEDIUM"}}],"providerMetadata":{"shortName":"hackerone","orgId":"36234546-b8fa-4601-9d6f-f4e334aa8ea1","dateUpdated":"2026-01-20T20:48:47.974Z"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-01-21T20:41:47.623291Z","id":"CVE-2026-21663","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-79","type":"CWE","lang":"en","description":"CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')"}]}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-01-21T20:42:21.072Z"}}]}}}