Vulnerability Description
A stored cross-site scripting (XSS) vulnerability exists in osTicket 1.18.3 due to improper sanitization of the thread entry title field. User-controlled input in the title is stored without adequate HTML escaping and later rendered in multiple staff-facing templates without proper output encoding. An attacker can inject arbitrary JavaScript by submitting a crafted ticket reply or email with a malicious subject line.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- https://github.com/fr3akhacks/cve-disclosures/blob/master/osTicket/CVE-2026-3844
- https://github.com/osTicket/osTicket/blob/v1.18.3/include/staff/templates/reply-
- https://github.com/osTicket/osTicket/blob/v1.18.3/include/staff/templates/thread
- https://github.com/osTicket/osTicket/blob/v1.18.3/include/staff/templates/thread
- https://github.com/osTicket/osTicket/commit/1e39bf1cf78fa298285f19b98f6a6dbb6808
FAQ
What is CVE-2026-38446?
CVE-2026-38446 is a vulnerability with a CVSS score of 6.1 (MEDIUM). A stored cross-site scripting (XSS) vulnerability exists in osTicket 1.18.3 due to improper sanitization of the thread entry title field. User-controlled input in the title is stored without adequate ...
How severe is CVE-2026-38446?
CVE-2026-38446 has been rated MEDIUM with a CVSS base score of 6.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-38446?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.