Unrated severityNVD Advisory· Published Aug 3, 2026· Updated Aug 3, 2026

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.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Osticket/Osticketllm-fuzzy
Range: <1.18.3

Patches

Vulnerability mechanics

References

github.com/fr3akhacks/cve-disclosures/blob/master/osTicket/CVE-2026-38444.mdmitre
github.com/osTicket/osTicket/blob/develop/include/class.mailparse.phpmitre
github.com/osTicket/osTicket/commit/c54a6ac79de42cff35b453882d1d94cd38adb17fmitre

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