CVE-2026-31803 Combodo iTop: Reflected XSS in tag admin
Attackers can execute arbitrary scripts in victim browsers via reflected XSS in the tag admin page of Combodo iTop.
- 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-2026-31803?
CVE-2026-31803 is a high-severity cross-site scripting vulnerability in Combodo iTop, published on 21 Aug 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
Combodo iTop is a web based IT service management tool. Prior to 3.2.3, 3.2.3, there is a Reflected Cross-Site Scripting (XSS) vulnerability in pages/tagadmin.php. This issue has been fixed in version 3.2.3.
Weakness: CWE-79
Which versions are affected by CVE-2026-31803?
How do I fix CVE-2026-31803?
No fix has been published for CVE-2026-31803 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-2026-31803 being exploited?
There is no known exploitation of CVE-2026-31803 in the wild and no public exploit code.
Sources
Also known as GHSA-m27p-8qgh-857g.