Which versions of Chaiscript are affected by CVE-2026-2656?

CVE-2026-2656 is a low-severity vulnerability in ChaiScript (CVSS 2.5). The limited severity suggests constrained impact, typically requiring specific conditions or local access for exploitation.

Is there a public PoC exploit available for CVE-2026-2656?

Yes, a public proof-of-concept exploit is available for CVE-2026-2656. Prioritise patching immediately. EPSS: 0.0%.

How to fix or mitigate CVE-2026-2656?

During next maintenance window: Apply vendor patches when convenient. Monitor vendor channels for updates.

Chaiscript CVE-2026-2656

Q: What is the CVSS score of CVE-2026-2656?

CVE-2026-2656 has a CVSS 4.0 base score of 1.1 (Low). CVSS vector: CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X. EPSS exploitation probability: 0.0%.

LOW

Buffer Overflow (CWE-119)

2026-02-18 cna@vuldb.com

Buffer Overflow Denial Of Service Chaiscript

1.1

CVSS 4.0 · NVD

Severity by source

NVD PRIMARY

1.1 LOW

CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Local

Attack Complexity

High

Privileges Required

Low

User Interaction

None

Scope

Lifecycle Timeline

CVSS changed

Apr 29, 2026 - 01:11 NVD

2.5 (LOW) 1.1 (LOW)

Analysis Generated

Mar 12, 2026 - 21:55 vuln.today

PoC Detected

Feb 19, 2026 - 17:22 vuln.today

Public exploit code

CVE Published

Feb 18, 2026 - 15:18 nvd

LOW 2.5

DescriptionCVE.org

A flaw has been found in ChaiScript up to 6.1.0. This affects the function chaiscript::Type_Info::bare_equal of the file include/chaiscript/dispatchkit/type_info.hpp. This manipulation causes use after free. The attack requires local access. The attack's complexity is rated as high. The exploitability is reported as difficult. The exploit has been published and may be used. The project was informed of the problem early through an issue report but has not responded yet.

AnalysisAI

A flaw has been found in ChaiScript up to 6.1.0. This affects the function chaiscript::Type_Info::bare_equal of the file include/chaiscript/dispatchkit/type_info.hpp. [CVSS 2.5 LOW]

Technical ContextAI

Classified as CWE-119 (Buffer Overflow). Affects Chaiscript. A flaw has been found in ChaiScript up to 6.1.0. This affects the function chaiscript::Type_Info::bare_equal of the file include/chaiscript/dispatchkit/type_info.hpp. This manipulation causes use after free. The attack requires local access. The attack's complexity is rated as high. The exploitability is reported as difficult. The exploit has been published and may be used. The project was informed of the problem early through an issue report but has not responded yet.