CVE-2026-6003 code-projects Simple IT Discussion Forum user.php cross site scripting
Remote attackers can inject malicious scripts via the fname argument in the admin user interface, potentially compromising user sessions.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-6003?
CVE-2026-6003 is a medium-severity cross-site scripting vulnerability in code-projects Simple IT Discussion Forum, published on 10 Apr 2026. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Official description
A security vulnerability has been detected in code-projects Simple IT Discussion Forum 1.0. This issue affects some unknown processing of the file /admin/user.php. Such manipulation of the argument fname leads to cross site scripting. The attack may be performed from remote. The exploit has been disclosed publicly and may be used.
Which versions are affected by CVE-2026-6003?
How do I fix CVE-2026-6003?
No fix has been published for CVE-2026-6003 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-2026-6003 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-6003 exists.
Sources
Also known as GHSA-2pxh-mqv9-4gpp.