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.

Metrics

Attack Vector Local

Attack Complexity High

Privileges Required Low

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact Low

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Local

Attack Complexity High

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact Low

User Interaction None

Attack Vector Local

Attack Complexity High

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact Low

User Interaction None

Access Vector Local

Access Complexity High

Authentication Single

Confidentiality Impact None

Integrity Impact None

Availability Impact Partial

This CVE is not in the KEV list.

Exploitation poc

Automatable no

Technical Impact partial

Affected Vendors & Products

Vendors Products
Chaiscript
  • Chaiscript

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References
Link Providers
https://github.com/ChaiScript/ChaiScript/ cve-icon cve-icon
https://github.com/ChaiScript/ChaiScript/issues/636 cve-icon cve-icon
https://github.com/ChaiScript/ChaiScript/issues/636#issue-3828333582 cve-icon cve-icon
https://vuldb.com/?ctiid.346454 cve-icon cve-icon
https://vuldb.com/?id.346454 cve-icon cve-icon
https://vuldb.com/?submit.752790 cve-icon cve-icon
History

Thu, 19 Feb 2026 10:30:00 +0000

Type Values Removed Values Added
First Time appeared Chaiscript
Chaiscript chaiscript
Vendors & Products Chaiscript
Chaiscript chaiscript

Wed, 18 Feb 2026 15:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Wed, 18 Feb 2026 15:00:00 +0000

Type Values Removed Values Added
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.
Title ChaiScript type_info.hpp bare_equal use after free
Weaknesses CWE-119
CWE-416
References
Metrics cvssV2_0

{'score': 1, 'vector': 'AV:L/AC:H/Au:S/C:N/I:N/A:P/E:POC/RL:ND/RC:UR'}

cvssV3_0

{'score': 2.5, 'vector': 'CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R'}

cvssV3_1

{'score': 2.5, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R'}

cvssV4_0

{'score': 2, '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'}
cve-icon MITRE

Status: PUBLISHED

Assigner: VulDB

Published: 2026-02-18T14:32:07.335Z

Updated: 2026-02-18T15:11:04.454Z

Reserved: 2026-02-18T06:43:23.403Z

Link: CVE-2026-2656

cve-icon Vulnrichment

Updated: 2026-02-18T15:10:59.583Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-02-18T15:18:44.743

Modified: 2026-02-18T17:51:53.510

Link: CVE-2026-2656

cve-icon Redhat

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