{"id":"CVE-2025-40631","aliases":["EUVD-2025-15437","GHSA-77wj-x762-6p2r"],"status":"published","title":"HTTP host header injection vulnerability in IceWarp Mail Server","description":"HTTP host header injection vulnerability in Icewarp Mail Server affecting version 11.4.0. By modifying the Host header and adding a payload, arbitrary JavaScript code can be executed on page load. The user must interact with a malicious link to be redirected.","severity":{"version":"4.0","score":2,"vector":"CVSS:4.0/AV:A/AC:H/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N","level":"low","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00224,"percentile":0.13195,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-644"],"published":"2025-05-16T11:09:17Z","modified":"2026-06-17T09:21:51Z","products":[{"vendor":"icewarp","product":"icewarp mail server"},{"vendor":"icewarp","product":"mail_server"}],"references":[{"url":"https://www.incibe.es/en/incibe-cert/notices/aviso/multiple-vulnerabilities-icewarp-mail-server","tags":["Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-40631"},{"url":"https://github.com/advisories/GHSA-77wj-x762-6p2r"}],"sources":{"cve":[{"id":"CVE-2025-40631","title":"HTTP host header injection vulnerability in IceWarp Mail Server","description":"HTTP host header injection vulnerability in Icewarp Mail Server affecting version 11.4.0. By modifying the Host header and adding a payload, arbitrary JavaScript code can be executed on page load. The user must interact with a malicious link to be redirected.","status":"published","published":"2025-05-16T11:09:17.351Z","modified":"2025-05-16T13:46:34.76Z","cvss":[{"version":"4.0","score":2,"vector":"CVSS:4.0/AV:A/AC:H/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N","level":"low","assessor":"cna"}],"cwes":["CWE-644"],"updated_at":"2026-11-02T14:32:34.434755Z"}],"euvd":[{"id":"EUVD-2025-15437","description":"HTTP host header injection vulnerability in Icewarp Mail Server affecting version 11.4.0. By modifying the Host header and adding a payload, arbitrary JavaScript code can be executed on page load. The user must interact with a malicious link to be redirected.","status":"published","published":"2025-05-16T11:09:17Z","modified":"2025-05-16T13:46:34Z","cvss":[{"version":"4.0","score":2,"vector":"CVSS:4.0/AV:A/AC:H/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N","level":"low"}],"updated_at":"2026-11-02T20:32:45.606938Z"}],"ghsa":[{"id":"GHSA-77wj-x762-6p2r","title":"HTTP host header injection vulnerability in Icewarp Mail Server affecting version 11.4.0. By...","description":"HTTP host header injection vulnerability in Icewarp Mail Server affecting version 11.4.0. By modifying the Host header and adding a payload, arbitrary JavaScript code can be executed on page load. The user must interact with a malicious link to be redirected.","status":"published","published":"2025-05-16T12:30:26Z","modified":"2025-10-09T21:31:09Z","cvss":[{"version":"4.0","score":2,"vector":"CVSS:4.0/AV:A/AC:H/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","level":"low"},{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-644"],"updated_at":"2026-11-02T15:03:55.615501Z"}],"nvd":[{"id":"CVE-2025-40631","description":"HTTP host header injection vulnerability in Icewarp Mail Server affecting version 11.4.0. By modifying the Host header and adding a payload, arbitrary JavaScript code can be executed on page load. The user must interact with a malicious link to be redirected.","status":"published","published":"2025-05-16T11:15:45.69Z","modified":"2026-06-17T09:21:51.62Z","cvss":[{"version":"4.0","score":2,"vector":"CVSS:4.0/AV:A/AC:H/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","level":"low","assessor":"secondary"},{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-644"],"updated_at":"2026-11-02T14:11:08.321805Z"}]}}