CVE-2026-40877 Combodo iTop: PHP Object Injection Leading to Remote Code Execution on user preferences
Attackers can achieve remote code execution via PHP object injection in user preferences of the iTop ITSM tool.
- 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-2026-40877?
CVE-2026-40877 is a high-severity unsafe deserialization vulnerability in Combodo iTop, published on 24 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, iTop is vulnerable to PHP object injection in the user preference functionality, which can lead to remote code execution. This issue has been fixed in version 3.2.3.
Which versions are affected by CVE-2026-40877?
How do I fix CVE-2026-40877?
No fix has been published for CVE-2026-40877 yet. Limit exposure of the affected software until one is available.
Upgrade, and only deserialise data from trusted sources or with an allow-list of types. More about Unsafe deserialization.
Is CVE-2026-40877 being exploited?
There is no known exploitation of CVE-2026-40877 in the wild and no public exploit code.
Sources
Also known as GHSA-3mq5-p5vh-cw7r.