CVE-2026-72705

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This admits a type that is definitionally equal to its own negation, so self-application produces False in purely definitional code, without tactics, axioms, plugins or unsafe flags, and Print Assumptions reports the result as closed under the global context. Fixed in Rocq 9.2.0."}, {"lang": "es", "value": "El verificador de guardas en Rocq Prover no sigue las llamadas recursivas realizadas a trav\u00e9s de los propios argumentos de un punto fijo. Un punto fijo puede pasarse a s\u00ed mismo como un argumento de orden superior a un segundo punto fijo, el cual luego lo aplica a un valor que no es un subt\u00e9rmino del argumento estructural. Pasar la funci\u00f3n recursiva a una definici\u00f3n simple es rechazado porque el verificador despliega la definici\u00f3n y observa la llamada, pero pasarlo a un punto fijo es aceptado porque las llamadas recursivas de orden superior a trav\u00e9s de argumentos de punto fijo no son rastreadas. Esto admite un tipo que es definicionalmente igual a su propia negaci\u00f3n, por lo que la autoaplicaci\u00f3n produce Falso en c\u00f3digo puramente definicional, sin t\u00e1cticas, axiomas, plugins o flags inseguros, y Print Assumptions informa el resultado como cerrado bajo el contexto global. Corregido en Rocq 9.2.0."}], "id": "CVE-2026-72705", "lastModified": "2026-10-26T02:17:07.363", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "NONE", "baseScore": 6.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 4.0, "source": "disclosure@vulncheck.com", "type": "Secondary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "LOCAL", "availabilityRequirement": "NOT_DEFINED", "baseScore": 6.8, "baseSeverity": "MEDIUM", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "PASSIVE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "version": "4.0", "vulnAvailabilityImpact": "NONE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "HIGH", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "disclosure@vulncheck.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-72705", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-08-26T15:46:51.503814Z", "version": "2.0.3"}}]}, "published": "2026-08-24T20:17:18.520", "references": [{"source": "disclosure@vulncheck.com", "url": "https://github.com/endrazine/rocq-cve-poc-21683"}, {"source": "disclosure@vulncheck.com", "url": "https://github.com/rocq-prover/rocq"}, {"source": "disclosure@vulncheck.com", "url": "https://github.com/rocq-prover/rocq/issues/21683"}, {"source": "disclosure@vulncheck.com", "url": "https://github.com/rocq-prover/rocq/pull/21684"}, {"source": "disclosure@vulncheck.com", "url": "https://www.vulncheck.com/advisories/rocq-prover-before-guard-checker-accepts-fixpoint-passed-as-a-higher-order-argument"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.openwall.com/lists/oss-security/2026/10/26/6"}], "sourceIdentifier": "disclosure@vulncheck.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-670"}], "source": "disclosure@vulncheck.com", "type": "Secondary"}]}

{}

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