CVE-2026-13556 itsourcecode Online Hotel Management System POST Request controller.php edit cross site scripting
Remote attackers can inject malicious scripts via the Name parameter in the admin user edit page, potentially compromising user sessions.
- 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-2026-13556?
CVE-2026-13556 is a medium-severity cross-site scripting vulnerability in itsourcecode Online Hotel Management System, published on 29 Jun 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
A vulnerability was determined in itsourcecode Online Hotel Management System 1.0. This affects an unknown part of the file /admin/mod_users/controller.php?action=edit of the component POST Request Handler. This manipulation of the argument Name causes cross site scripting. The attack may be initiated remotely. The exploit has been publicly disclosed and may be utilized.
Which versions are affected by CVE-2026-13556?
How do I fix CVE-2026-13556?
No fix has been published for CVE-2026-13556 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-2026-13556 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-13556 exists.
Sources
Also known as GHSA-3qrp-f55m-c6cw.