CVE-2026-2656
ChaiScript type_info.hpp bare_equal use after free
- State
- Published
- Severity
- 2.0 Low
- Published
- Feb 18, 2026
- Updated
- Feb 23, 2026
- Reserved
- Feb 18, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 2.0 Low | 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 | VulDB |
| 3.1 | 2.5 Low | 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 | VulDB |
| 3.0 | 2.5 Low | 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 | VulDB |
| 2.0 | 1.0 Low | AV:L/AC:H/Au:S/C:N/I:N/A:P/E:POC/RL:ND/RC:UR | VulDB |
Weaknesses
Affected Products
| Product | Versions |
|---|---|
ChaiScriptn/a |
|
References
- VDB-346454 | ChaiScript type_info.hpp bare_equal use after freevdb-entrytechnical-description
- VDB-346454 | CTI Indicators (IOB, IOC, IOA)signaturepermissions-required
- Submit #752790 | ChaiScript develop branch Use After Freethird-party-advisory
- https://github.com/ChaiScript/ChaiScript/issues/636issue-tracking
- https://github.com/ChaiScript/ChaiScript/issues/636#issue-3828333582exploitissue-tracking
- https://github.com/ChaiScript/ChaiScript/product
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