{"id":"CVE-2026-38444","aliases":["EUVD-2026-52404","GHSA-9f9p-h4h5-j53f"],"status":"published","title":"osTicket v1.18.3 is vulnerable to Stored Cross-Site Scripting (XSS) via the email From-header...","description":"osTicket v1.18.3 is vulnerable to Stored Cross-Site Scripting (XSS) via the email From-header display name. The value is extracted without sanitization in include/class.mailparse.php and stored raw in the poster field of ost_thread_entry. When an unauthenticated attacker sends a reply email to an existing ticket from an unregistered address with an XSS payload in the From display name.","severity":{"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":"adp","from":"cve"},"epss":{"day":"2026-11-10","score":0.00356,"percentile":0.29603,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-79"],"published":"2026-08-03T00:00:00Z","modified":"2026-10-28T02:31:00Z","exploits":[{"source":"pocgithub","id":"fr3akhacks/cve-disclosures","title":"fr3akhacks/cve-disclosures","date":"2026-05-28","url":"https://github.com/fr3akhacks/cve-disclosures"}],"references":[{"url":"https://github.com/osTicket/osTicket/blob/develop/include/class.mailparse.php","tags":["web"]},{"url":"https://github.com/osTicket/osTicket/commit/c54a6ac79de42cff35b453882d1d94cd38adb17f","tags":["fix"]},{"url":"https://github.com/fr3akhacks/cve-disclosures/blob/master/osTicket/CVE-2026-38444.md","tags":["web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-38444","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-9f9p-h4h5-j53f"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/38xxx/CVE-2026-38444.json","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2026-38444","description":"osTicket v1.18.3 is vulnerable to Stored Cross-Site Scripting (XSS) via the email From-header display name. The value is extracted without sanitization in include/class.mailparse.php and stored raw in the poster field of ost_thread_entry. When an unauthenticated attacker sends a reply email to an existing ticket from an unregistered address with an XSS payload in the From display name.","status":"published","published":"2026-08-03T00:00:00Z","modified":"2026-08-03T19:31:07.711Z","cvss":[{"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":"adp"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:19:58.560602Z"}],"euvd":[{"id":"EUVD-2026-52404","description":"osTicket v1.18.3 is vulnerable to Stored Cross-Site Scripting (XSS) via the email From-header display name. The value is extracted without sanitization in include/class.mailparse.php and stored raw in the poster field of ost_thread_entry. When an unauthenticated attacker sends a reply email to an existing ticket from an unregistered address with an XSS payload in the From display name.","status":"published","published":"2026-08-03T00:00:00Z","modified":"2026-08-03T19:31:07Z","cvss":[{"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"}],"updated_at":"2026-11-02T18:02:23.68186Z"}],"ghsa":[{"id":"GHSA-9f9p-h4h5-j53f","title":"osTicket v1.18.3 is vulnerable to Stored Cross-Site Scripting (XSS) via the email From-header...","description":"osTicket v1.18.3 is vulnerable to Stored Cross-Site Scripting (XSS) via the email From-header display name. The value is extracted without sanitization in include/class.mailparse.php and stored raw in the poster field of ost_thread_entry. When an unauthenticated attacker sends a reply email to an existing ticket from an unregistered address with an XSS payload in the From display name.","status":"published","published":"2026-08-03T21:31:36Z","modified":"2026-08-03T21:31:36Z","cvss":[{"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-79"],"updated_at":"2026-11-02T15:10:02.88062Z"}],"nvd":[{"id":"CVE-2026-38444","description":"osTicket v1.18.3 is vulnerable to Stored Cross-Site Scripting (XSS) via the email From-header display name. The value is extracted without sanitization in include/class.mailparse.php and stored raw in the poster field of ost_thread_entry. When an unauthenticated attacker sends a reply email to an existing ticket from an unregistered address with an XSS payload in the From display name.","status":"published","published":"2026-08-03T19:16:46.653Z","modified":"2026-08-31T19:33:11.197Z","cvss":[{"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":"secondary"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:12:34.643497Z"}],"osv":[{"id":"CVE-2026-38444","description":"osTicket v1.18.3 is vulnerable to Stored Cross-Site Scripting (XSS) via the email From-header display name. The value is extracted without sanitization in include/class.mailparse.php and stored raw in the poster field of ost_thread_entry. When an unauthenticated attacker sends a reply email to an existing ticket from an unregistered address with an XSS payload in the From display name.","status":"published","published":"2026-08-03T00:00:00Z","modified":"2026-10-28T02:31:00.030367417Z","cvss":[{"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"}],"updated_at":"2026-11-02T15:45:03.040464Z"}]}}