CVE-2026-3946 PHPEMS index.php cross site scripting
Remote attackers can execute arbitrary scripts via the askcontent parameter in PHPEMS, potentially leading to session hijacking or malicious actions.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-3946?
CVE-2026-3946 is a medium-severity cross-site scripting vulnerability in PHPEMS, published on 11 Mar 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
A vulnerability was detected in PHPEMS 11.0. The affected element is an unknown function of the file /index.php?ask=app-ask. Performing a manipulation of the argument askcontent results in cross site scripting. The attack is possible to be carried out remotely. The exploit is now public and may be used.
Which versions are affected by CVE-2026-3946?
How do I fix CVE-2026-3946?
No fix has been published for CVE-2026-3946 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-2026-3946 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-3946 exists.
Sources
Also known as GHSA-chqv-q9p2-5h5h.