CVE-2026-2655

Name: CVE-2026-2655
Creator: NVD / NIST
Published: 2026-02-18T14:16:07.49+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

LOWCVSS 1.1/10EPSS 0.19%

Last modified Jun 17, 2026

CVE-2026-2655 is a low-severity vulnerability rated 1.1/10 on the CVSS scale. A vulnerability was detected in ChaiScript up to 6.1.0. The impacted element is the function chaiscript::str_less::operator of the file include/chaiscript/chaiscript_defines.hpp. EPSS estimates a 0.19% chance of exploitation in the next 30 days.

Description

A vulnerability was detected in ChaiScript up to 6.1.0. The impacted element is the function chaiscript::str_less::operator of the file include/chaiscript/chaiscript_defines.hpp. The manipulation results in use after free. The attack requires a local approach. The attack requires a high level of complexity. The exploitability is regarded as difficult. The exploit is now public 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/632Exploit, Issue Tracking, Vendor Advisory
https://github.com/ChaiScript/ChaiScript/issues/632#issue-3827824936Exploit, Issue Tracking, Vendor Advisory
https://vuldb.com/?ctiid.346453Third Party Advisory, VDB Entry
https://vuldb.com/?id.346453Third Party Advisory, VDB Entry
https://vuldb.com/?submit.752788Third Party Advisory, VDB Entry
https://github.com/ChaiScript/ChaiScript/issues/632Exploit, Issue Tracking, Vendor Advisory

Timeline

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

Frequently Asked Questions

What is CVE-2026-2655?

How severe is CVE-2026-2655?

CVE-2026-2655 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-2026-2655?

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-2026-2655?

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

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Source: NVD / NIST