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.
Advisories
No advisories yet.
Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
History
Mon, 03 Aug 2026 20:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Weaknesses | CWE-79 | |
| Metrics |
cvssV3_1
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Mon, 03 Aug 2026 19:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Osticket
Osticket osticket |
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| Vendors & Products |
Osticket
Osticket osticket |
Mon, 03 Aug 2026 18:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| 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. | |
| References |
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Projects
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Status: PUBLISHED
Assigner: mitre
Published:
Updated: 2026-08-03T19:31:07.711Z
Reserved: 2026-04-06T00:00:00.000Z
Link: CVE-2026-38444
Updated: 2026-08-03T19:31:03.929Z
No data.
No data.
OpenCVE Enrichment
Updated: 2026-08-03T19:30:04Z
Weaknesses