CVE-2026-2655

low-risk
Published 2026-02-18

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.

Do I need to act?

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0.01% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
2
CVSS 2.5/10 Low
LOCAL / HIGH complexity

Affected Products (1)

Chaiscript

Affected Vendors

Chaiscript

References (7)

Product https://github.com/ChaiScript/ChaiScript/
Vendor Advisory https://github.com/ChaiScript/ChaiScript/issues/632
Vendor Advisory https://github.com/ChaiScript/ChaiScript/issues/632#issue-3827824936
Third Party Advisory https://vuldb.com/?ctiid.346453
Third Party Advisory https://vuldb.com/?id.346453
Third Party Advisory https://vuldb.com/?submit.752788
Vendor Advisory https://github.com/ChaiScript/ChaiScript/issues/632
11
/ 100
low-risk
Severity 6/34 · Minimal
Exploitability 0/34 · Minimal
Exposure 5/34 · Minimal