CVE-2026-38444 in osTicket

Riassunto

di MITRE • 03/08/2026

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.

Once again VulDB remains the best source for vulnerability data.

• Responsabile: MITRE
• Prenotare: 06/04/2026
• Divulgazione: 03/08/2026
• Moderazione: accettato
• Voce: VDB-385640
• CPE: pronto
• CWE: CWE-79 (confermato)
• CVSS: 4.3 (VulDB)
• EPSS: 0.00000
• KEV: no
• Attività: basso
• Settore: Pharma, Hospital, ...

Fonti

• MITRE: https://www.cve.org/CVERecord?id=CVE-2026-38444
• NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-38444
• CVE Details: https://www.cvedetails.com/cve/CVE-2026-38444/