{"id":"CVE-2026-44961","state":"PUBLISHED","title":"The XML‑RPC API addUser method has a validation bypass introduced in the fix for CVE‑2025‑55129. As a result, API users could create usernames that enabled impersonation or stored ","description":"The XML‑RPC API addUser method has a validation bypass introduced in the fix for CVE‑2025‑55129. As a result, API users could create usernames that enabled impersonation or stored XSS attacks. Proper validation has been added where it was missing.","publishedAt":"2026-06-23T16:14:38.126Z","updatedAt":"2026-06-23T17:44:07.348Z","severity":{"score":0,"label":"None","version":"3.0","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:N","source":"hackerone"},"assigner":"hackerone","products":["Revive Adserver"],"affected":[{"vendor":"Revive","product":"Adserver","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"6.0.6","versionType":"semver"}]}],"references":["https://hackerone.com/reports/3680090"],"weaknesses":["CWE-287"],"ingestedAt":"2026-10-29T20:11:57.932Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/44xxx/CVE-2026-44961.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-44961","state":"PUBLISHED","datePublished":"2026-06-23T16:14:38.126Z","dateUpdated":"2026-06-23T17:44:07.348Z","assignerShortName":"hackerone","assignerOrgId":"36234546-b8fa-4601-9d6f-f4e334aa8ea1","dateReserved":"2026-05-08T15:00:02.447Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"The XML‑RPC API addUser method has a validation bypass introduced in the fix for CVE‑2025‑55129. As a result, API users could create usernames that enabled impersonation or stored XSS attacks. Proper validation has been added where it was missing."}],"affected":[{"vendor":"Revive","product":"Adserver","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"6.0.6","versionType":"semver"}]}],"references":[{"url":"https://hackerone.com/reports/3680090"}],"metrics":[{"cvssV3_0":{"version":"3.0","vectorString":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:N","baseScore":0,"baseSeverity":"NONE"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-287","type":"CWE","lang":"en","description":"CWE-287 Improper Authentication - Generic"}]}],"providerMetadata":{"shortName":"hackerone","orgId":"36234546-b8fa-4601-9d6f-f4e334aa8ea1","dateUpdated":"2026-06-23T16:14:38.126Z"},"credits":[{"lang":"en","value":"barcrange (3l4)","type":"reporter"}]},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-06-23T17:32:45.247422Z","id":"CVE-2026-44961","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-06-23T17:44:07.348Z"}}]}}}