CVE-2026-2655CWE-119CWE-416

ChaiScript chaiscript_defines.hpp operator use after free

Low · published February 18, 2026

CVSS v4.0
2.0
EPSS
0%
Percentile
7.8
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
2.0 · LOW
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
EPSS
0.00186 · 7.8th percentile
Weaknesses
CWE-119 · Improper Restriction of Operations within the Bounds of a Memory Buffer; CWE-416 · Use After Free
Published
2026-02-18T14:02Z
EPSS history
Timeline
  • 18 FEB 14:02Z
    ChaiScript chaiscript_defines.hpp operator use after free
    cvelistv5