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CVE-2026-2656

Estado: AnalizadaBaja (1.1)—

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.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

Chaiscript — Chaiscript

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2026-2656",
  "cveTags": [],
  "metrics": {
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          "role": "CISA Coordinator",
          "options": [
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            },
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              "automatable": "no"
            },
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              "technicalImpact": "partial"
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          "version": "2.0.3",
          "timestamp": "2026-02-18T15:10:55.409203Z"
        }
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    "cvssMetricV2": [
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          "accessVector": "LOCAL",
          "vectorString": "AV:L/AC:H/Au:S/C:N/I:N/A:P",
          "authentication": "SINGLE",
          "integrityImpact": "NONE",
          "accessComplexity": "HIGH",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "NONE"
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        "baseSeverity": "LOW",
        "obtainAllPrivilege": false,
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    "cvssMetricV31": [
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          "exploitMaturity": "PROOF_OF_CONCEPT",
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          "attackRequirements": "NONE",
          "privilegesRequired": "LOW",
          "subIntegrityImpact": "NONE",
          "vulnIntegrityImpact": "NONE",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "vulnAvailabilityImpact": "LOW",
          "availabilityRequirement": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "subConfidentialityImpact": "NONE",
          "vulnConfidentialityImpact": "NONE",
          "confidentialityRequirement": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "vulnerabilityResponseEffort": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
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      "affectedData": [
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          "vendor": "n/a",
          "product": "ChaiScript",
          "versions": [
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            },
            {
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              "version": "6.1.0"
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        }
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  ],
  "published": "2026-02-18T15:18:44.743",
  "references": [
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      "url": "https://github.com/ChaiScript/ChaiScript/",
      "tags": [
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      "tags": [
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        "Vendor Advisory"
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    {
      "url": "https://github.com/ChaiScript/ChaiScript/issues/636#issue-3828333582",
      "tags": [
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        "Issue Tracking",
        "Vendor Advisory"
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      "tags": [
        "Third Party Advisory",
        "VDB Entry"
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      "source": "cna@vuldb.com"
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  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "cna@vuldb.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-119"
        },
        {
          "lang": "en",
          "value": "CWE-416"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "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."
    },
    {
      "lang": "es",
      "value": "Se ha encontrado una vulnerabilidad en ChaiScript hasta la versión 6.1.0. Esto afecta a la función chaiscript::Type_Info::bare_equal del archivo include/chaiscript/dispatchkit/type_info.hpp. Esta manipulación causa uso después de liberar. El ataque requiere acceso local. La complejidad del ataque se califica como alta. La explotabilidad se informa como difícil. El exploit ha sido publicado y puede ser utilizado. El proyecto fue informado del problema tempranamente a través de un informe de incidencia, pero aún no ha respondido."
    }
  ],
  "lastModified": "2026-06-17T10:31:28.747",
  "configurations": [
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              "vulnerable": true,
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              "versionEndIncluding": "6.1.0"
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          "operator": "OR"
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  "sourceIdentifier": "cna@vuldb.com"
}