Is CVE-2026-2656 actively exploited?

A proof-of-concept exploit is publicly available for CVE-2026-2656, but active exploitation has not been confirmed.

Can CVE-2026-2656 be exploited remotely?

No. CVE-2026-2656 requires local access to exploit.

What is the CVSS score of CVE-2026-2656?

CVE-2026-2656 has a CVSS score of 2.5 (LOW) and an EPSS exploitation probability of 0.02%.

HOME VULNERABILITIESCVE-2026-2656

LOWPOC

CVE-2026-2656

CWE-119Published: February 18, 2026· Updated: Feb 19, 2026

2.5

CVSS v3.1

EPSS:0.01%probability of exploitation in 30 daysPercentile:2.0th

Official 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.

NVD Source

Technical Analysis

CVE-2026-2656 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A proof-of-concept (PoC) exploit exists for CVE-2026-2656. While not yet confirmed in active campaigns, the availability of PoC code increases exploitation risk substantially.

From a weakness classification perspective (CWE-119): Buffer overflow vulnerabilities can lead to arbitrary code execution or denial of service by corrupting adjacent memory.