TI-2026-02920 Aliases CVE-2026-3384 GHSA-7q9h-8h4g-w68v

ChaiScript chaiscript_eval.hpp Function_Push_Pop recursion

MEDIUM 55CWE-404Published 2026-03-01 · Updated 2026-03-02

Key facts

Attack vector: Local
Privileges required: Low
User interaction: None
Attack complexity: Low
Attack requirements: None
Impact type: Denial of service
Confidentiality · integrity · availability: None · None · Low
Fix status: No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-404.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00185 8th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by the CNA

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	ChaiScript	6.0; 6.1.0	—	No fix listed	CNA

ChaiScript Vendor— Affected 6.0; 6.1.0 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:chaiscript:chaiscript::::::::	up to 6.1.0	Vulnerable	Chaiscript

cpe:2.3:a:chaiscript:chaiscript:*:*:*:*:*:*:*:* Versions up to 6.1.0 Vulnerable ·Chaiscript

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2026-3384
2026-10-03 Alias added: GHSA-7q9h-8h4g-w68v

References

Exploit 1

https://github.com/ChaiScript/ChaiScript/issues/633#issue-3828176056

Other 2

TI-2026-02919 ChaiScript boxed_number.hpp go divide by zero CVSS 4.0MEDIUM 4.8
TI-2026-02918 ChaiScript boxed_number.hpp get_as memory corruption CVSS 4.0MEDIUM 4.8
TI-2026-02268 ChaiScript type_info.hpp bare_equal use after free CVSS 4.0LOW 2.0
TI-2026-02267 ChaiScript chaiscript_defines.hpp operator use after free CVSS 4.0LOW 2.0

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences