{"id":"CVE-2026-44961","aliases":["EUVD-2026-38504","GHSA-9wv7-mm8f-m6cx"],"status":"published","title":"The XML‑RPC API addUser method has a validation bypass introduced in the fix for CVE‑2025‑55129....","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.","severity":{"version":"3.0","score":0,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:N","level":"none","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00412,"percentile":0.35995,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-287"],"published":"2026-06-23T16:14:38Z","modified":"2026-10-26T11:10:00Z","products":[{"vendor":"revive","product":"adserver"}],"references":[{"url":"https://hackerone.com/reports/3680090"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-44961"},{"url":"https://github.com/advisories/GHSA-9wv7-mm8f-m6cx"}],"sources":{"cve":[{"id":"CVE-2026-44961","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.","status":"published","published":"2026-06-23T16:14:38.126Z","modified":"2026-06-23T17:44:07.348Z","cvss":[{"version":"3.0","score":0,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:N","level":"none","assessor":"cna"}],"cwes":["CWE-287"],"updated_at":"2026-11-02T13:42:49.132798Z"}],"euvd":[{"id":"EUVD-2026-38504","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.","status":"published","published":"2026-06-23T16:14:38Z","modified":"2026-06-23T17:44:07Z","updated_at":"2026-11-02T18:20:31.51905Z"}],"ghsa":[{"id":"GHSA-9wv7-mm8f-m6cx","title":"The XML‑RPC API addUser method has a validation bypass introduced in the fix for CVE‑2025‑55129....","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.","status":"published","published":"2026-06-23T18:31:42Z","modified":"2026-06-23T18:31:52Z","cvss":[{"version":"3.0","score":0,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:N","level":"none"}],"cwes":["CWE-287"],"updated_at":"2026-11-02T15:08:57.478089Z"}],"nvd":[{"id":"CVE-2026-44961","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.","status":"published","published":"2026-06-23T17:17:00.34Z","modified":"2026-10-26T11:10:00.157Z","cvss":[{"version":"3.0","score":0,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:N","level":"none","assessor":"secondary"}],"cwes":["CWE-287"],"updated_at":"2026-11-02T14:12:25.288279Z"}]}}