CVE-2026-2656

Name: CVE-2026-2656
Creator: NVD / NIST
Published: 2026-02-18T15:18:44.743+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

LOWCVSS 1.1/10EPSS 0.19%

Last modified Jun 17, 2026

CVE-2026-2656 is a low-severity vulnerability rated 1.1/10 on the CVSS scale. 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. EPSS estimates a 0.19% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

2.5/10

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L

CVSS 4.0

1.1/10

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 Probability

0.19%

9.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Chaiscript	Chaiscript	<= 6.1.0

References

https://github.com/ChaiScript/ChaiScript/Product
https://github.com/ChaiScript/ChaiScript/issues/636Exploit, Issue Tracking, Vendor Advisory
https://github.com/ChaiScript/ChaiScript/issues/636#issue-3828333582Exploit, Issue Tracking, Vendor Advisory
https://vuldb.com/?ctiid.346454Third Party Advisory, VDB Entry
https://vuldb.com/?id.346454Third Party Advisory, VDB Entry
https://vuldb.com/?submit.752790Third Party Advisory, VDB Entry

Timeline

Published: Feb 18, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-2656?

How severe is CVE-2026-2656?

CVE-2026-2656 has a CVSS score of 1.1/10 (LOW severity). The EPSS model estimates a 0.19% probability of exploitation in the next 30 days.

How do I fix CVE-2026-2656?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-2656?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST