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OpenAdvisories
Medium · 6.1 Public exploit CVE-2026-38444 EUVD-2026-52404GHSA-9f9p-h4h5-j53f

osTicket v1.18.3 is vulnerable to Stored Cross-Site Scripting (XSS) via the email From-header display name. The value is extracted without …

Published Aug 3, 2026 · Updated Aug 3, 2026 · Assigned by mitre

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.

Public exploits

Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.

Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.

GitHub 1 repository

  • fr3akhacks/cve-disclosures ★ 0 · May 28, 2026

    Security advisories / CVE references for osTicket 1.18.3 (CVE-2026-38444, 38446, 38447)

Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.

References