{"affected":[{"defaultStatus":"unaffected","ecosystem":"github","packageName":"webmin/usermin","product":"usermin","source":"CNA: VulnCheck","vendor":"webmin","versions":[{"lessThanOrEqual":"2.570","status":"affected","version":"0","versionType":"custom"}]}],"cveId":"CVE-2026-123622","cwes":["CWE-79"],"description":"Usermin through 2.570 contains a cross-site scripting vulnerability in mailbox/detach.cgi that allows remote attackers to execute script by supplying an arbitrary type parameter that bypasses JavaScript filtering. Attackers can email an HTML attachment containing script and lure recipients to a detach.cgi link with type=text/html to run script in the victim's authenticated Usermin session.","epss":{"date":"2026-11-10","percentile":0.17758,"score":0.00259},"exploits":[{"kind":"exploit","source":"ADP: CISA-ADP","url":"https://hackmd.io/@leediay/H144QKY6zl"}],"kev":null,"metrics":[{"score":5.1,"severity":"medium","source":"CNA: VulnCheck","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N","version":"4.0"},{"score":6.1,"severity":"medium","source":"CNA: VulnCheck","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","version":"3.1"},{"score":5.1,"severity":"medium","source":"NVD: disclosure@vulncheck.com","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","version":"4.0"},{"score":6.1,"severity":"medium","source":"NVD: disclosure@vulncheck.com","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","version":"3.1"}],"modifiedAt":1794366329613,"publishedAt":1793977257104,"references":[{"source":"CNA: VulnCheck","tags":["issue-tracking"],"url":"https://github.com/webmin/usermin/issues/142"},{"source":"CNA: VulnCheck","tags":["product"],"url":"https://github.com/webmin/usermin"},{"source":"CNA: VulnCheck","tags":["patch"],"url":"https://github.com/webmin/usermin/commit/c5c43b9ad04a60809ac2eb271bf8f3d0fec2e46a"},{"source":"CNA: VulnCheck","tags":["technical-description"],"url":"https://github.com/webmin/usermin/blob/2.570/mailbox/detach.cgi#L80-L83"},{"source":"CNA: VulnCheck","tags":["technical-description"],"url":"https://hackmd.io/@leediay/H144QKY6zl"},{"source":"CNA: VulnCheck","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/usermin-through-2.570-xss-via-mailbox-detach-cgi-type-parameter"},{"source":"ADP: CISA-ADP","tags":["exploit"],"url":"https://hackmd.io/@leediay/H144QKY6zl"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://github.com/webmin/usermin"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://github.com/webmin/usermin/blob/2.570/mailbox/detach.cgi#L80-L83"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://github.com/webmin/usermin/commit/c5c43b9ad04a60809ac2eb271bf8f3d0fec2e46a"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://github.com/webmin/usermin/issues/142"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://hackmd.io/@leediay/H144QKY6zl"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://www.vulncheck.com/advisories/usermin-through-2.570-xss-via-mailbox-detach-cgi-type-parameter"}],"remediation":[{"kind":"fix","source":"CNA: VulnCheck","text":"The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.","url":"https://github.com/webmin/usermin/commit/c5c43b9ad04a60809ac2eb271bf8f3d0fec2e46a"}],"revision":"c76950615e169b201b64de68fc4c027e83f32a00e7fcae5caeee9fcf2fe1a8d7","sources":[{"modifiedAt":1794366329613,"name":"CNA: VulnCheck","retrievedAt":1794370116018,"url":"https://www.cve.org/CVERecord?id=CVE-2026-123622"},{"modifiedAt":1793978239900,"name":"NVD","retrievedAt":1793990200499,"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-123622"},{"modifiedAt":null,"name":"FIRST EPSS","retrievedAt":1794370126752,"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-123622"}],"ssvc":{"assessedAt":1794366293172,"automatable":"no","exploitation":"poc","source":"ADP: CISA-ADP","technicalImpact":"partial"},"status":"published","title":"Usermin through 2.570 XSS via mailbox detach.cgi type Parameter","updatedAt":1794370126752}