Low severity · published Feb 18, 2026
CVE-2026-2655
ChaiScript chaiscript_defines.hpp operator use after free
2.5
CVSS
0.2%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L
Attack vector
Local
Complexity
High
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
None
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 12% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CH
ChaiScript ·
6.0; 6.1.0 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-2655
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-2655
Product
https://github.com/ChaiScript/ChaiScript/
Exploit
https://github.com/ChaiScript/ChaiScript/issues/632
Exploit
https://github.com/ChaiScript/ChaiScript/issues/632#issue-3827824936
Third Party Advisory
https://vuldb.com/?ctiid.346453
Third Party Advisory
https://vuldb.com/?id.346453
Third Party Advisory
https://vuldb.com/?submit.752788
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