CVE-2025-24026 iTop Inefficient Regular Expression Complexity vulnerability
Attackers can cause denial of service in iTop via inefficient regular expressions unless the app_root_url configuration is set.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-24026?
CVE-2025-24026 is a medium-severity denial of service vulnerability in Combodo Itop, published on 14 May 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
iTop is an web based IT Service Management tool. Versions prior to 3.2.1 are vulnerable to regular expression denial of service (ReDoS) that may, under some circumstances, affect iTop server. Version 3.2.1 doesn't use the affected variable in the regular expression. As a workaround, if iTop app_root_url is defined in the configuration file, then there is no possible way to exploit this ReDoS.
Weakness: CWE-1333
Which versions are affected by CVE-2025-24026?
It affects 1 product.
Products include Combodo Itop.
How do I fix CVE-2025-24026?
No fix has been published for CVE-2025-24026 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2025-24026 being exploited?
There is no known exploitation of CVE-2025-24026 in the wild and no public exploit code.
Other vulnerabilities in Combodo Itop
- CVE-2023-48710 iTop limit pages/exec.php script to PHP files
- CVE-2022-39214 Authenticated users of Combodo iTop can take over any account
- CVE-2021-41161 XSS in csvimport in 3.0.0-beta versions
- CVE-2021-41162 Cross-site Scripting in Combodo iTop
- CVE-2025-47773 Combodo iTop has XSS vulnerability in /pages/ajax.render.php
Sources
Also known as GHSA-9g7f-jmc3-rrmf.