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CVE-2026-2655— ChaiScript chaiscript_defines.hpp operator use after free

Quick assessment

Affected
n/a ChaiScript
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

ChaiScript是ChaiScript开源的一个编程语言。 ChaiScript 6.1.0及之前版本存在安全漏洞，该漏洞源于释放后重用，可能导致本地内存损坏。

CVSS 2.5 · Low EPSS 0.17% · P5

Possible ATT&CK Techniques 1 AI

T1211 · Exploitation for Stealth
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I. Basic Information for CVE-2026-2655

Vulnerability Information
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Vulnerability Title
ChaiScript chaiscript_defines.hpp operator use after free
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
释放后使用
Source: CVE Program / CVE List V5
Vulnerability Title
ChaiScript 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
ChaiScript是ChaiScript开源的一个编程语言。 ChaiScript 6.1.0及之前版本存在安全漏洞，该漏洞源于释放后重用，可能导致本地内存损坏。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
- ChaiScript 6.0 -

II. Public POCs for CVE-2026-2655

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III. Intelligence Information for CVE-2026-2655

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Same Patch Batch · n/a · 2026-02-18 · 19 CVEs total

CVE-2025-70150 9.8 CRITICAL CodeAstro Membership Management System 安全漏洞
CVE-2025-70152 9.8 CRITICAL Code-Projects Community Project Scholars Tracking System 安全漏洞
CVE-2025-70148 7.5 HIGH CodeAstro Membership Management System 安全漏洞
CVE-2026-2653 5.3 MEDIUM admesh normals.c stl_check_normal_vector heap-based overflow
CVE-2026-2661 3.3 LOW Squirrel sqobject.h operator heap-based overflow
CVE-2026-2659 3.3 LOW Squirrel sqfuncstate.cpp PopTarget out-of-bounds
CVE-2026-2656 2.5 LOW ChaiScript type_info.hpp bare_equal use after free
CVE-2025-70149 CodeAstro Membership Management System 安全漏洞
CVE-2025-70151 Code-Projects Scholars Tracking System 安全漏洞
CVE-2025-70141 SourceCodester Customer Support System 安全漏洞
CVE-2025-70147 Projectworlds Online Time Table Generator 安全漏洞
CVE-2025-70064 PHPGurukul Hospital Management System 安全漏洞
CVE-2025-70998 UTT HiPER 810 安全漏洞
CVE-2025-65791 ZoneMinder 安全漏洞
CVE-2025-65519 ezBookkeeping 安全漏洞
CVE-2025-70063 PHPGurukul Hospital Management System 安全漏洞
CVE-2025-70146 Projectworlds Online Time Table Generator 安全漏洞
CVE-2025-70062 PHPGurukul Hospital Management System 安全漏洞

IV. Related Vulnerabilities

Same product: ChaiScript
Same vendor: n/a
Same weakness: CWE-416

V. Comments for CVE-2026-2655

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