CVE-2025-5552 ChestnutCMS API Endpoint exec deserialization
Remote attackers can achieve code execution via unsafe deserialization in the ChestnutCMS API endpoint, requiring immediate patching.
- 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-2025-5552?
CVE-2025-5552 is a medium-severity unsafe deserialization vulnerability in ChestnutCMS, published on 4 Jun 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A vulnerability was found in ChestnutCMS up to 15.1. It has been declared as critical. This vulnerability affects unknown code of the file /dev-api/groovy/exec of the component API Endpoint. The manipulation leads to deserialization. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used.
Which versions are affected by CVE-2025-5552?
It affects 1 product.
Products include 1000mz Chestnutcms.
How do I fix CVE-2025-5552?
No fix has been published for CVE-2025-5552 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-2025-5552 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-5552 exists.
Other vulnerabilities in ChestnutCMS
Sources
Also known as GHSA-w8w4-cj3p-j5vr.