CVE-2026-38444 Cross-site scripting in n/a
An unauthenticated attacker can inject malicious scripts via email display names, potentially leading to code execution or account takeover in osTicket.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-38444?
CVE-2026-38444 is a medium-severity cross-site scripting vulnerability in n/a, published on 3 Aug 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official 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.
Weakness: CWE-79
Which versions are affected by CVE-2026-38444?
How do I fix CVE-2026-38444?
No fix has been published for CVE-2026-38444 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2026-38444 being exploited?
There is no known exploitation of CVE-2026-38444 in the wild and no public exploit code.
Public exploit code: 1 proofs of concept on GitHub.
Sources
Also known as GHSA-9f9p-h4h5-j53f.