Security Advisory

CVE-2026-38444

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-08-03 00:00:00

Last updated 2026-08-03 19:31:07

Assigner mitre

CVSS score not scored

State PUBLISHED

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.

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