CVE-2026-3384 ChaiScript chaiscript_eval.hpp Function_Push_Pop recursion
Local attackers can cause denial of service in ChaiScript via uncontrolled recursion in the evaluation engine.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-3384?
CVE-2026-3384 is a medium-severity denial of service vulnerability in ChaiScript, published on 1 Mar 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A security vulnerability has been detected in ChaiScript up to 6.1.0. This impacts the function chaiscript::eval::AST_Node_Impl::eval/chaiscript::eval::Function_Push_Pop of the file include/chaiscript/language/chaiscript_eval.hpp. The manipulation leads to uncontrolled recursion. An attack has to be approached locally. The exploit has been disclosed publicly and may be used. The project was informed of the problem early through an issue report but has not responded yet.
Which versions are affected by CVE-2026-3384?
It affects 1 product.
Products include Chaiscript Chaiscript.
How do I fix CVE-2026-3384?
No fix has been published for CVE-2026-3384 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-2026-3384 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-3384 exists.
Other vulnerabilities in ChaiScript
Sources
Also known as GHSA-7q9h-8h4g-w68v.