{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-04-19T07:01:37.289","vulnerabilities":[{"cve":{"id":"CVE-2026-26007","sourceIdentifier":"security-advisories@github.com","published":"2026-02-10T22:17:00.307","lastModified":"2026-02-23T15:40:33.787","vulnStatus":"Analyzed","cveTags":[],"descriptions":[{"lang":"en","value":"cryptography is a package designed to expose cryptographic primitives and recipes to Python developers. Prior to 46.0.5, the public_key_from_numbers (or EllipticCurvePublicNumbers.public_key()), EllipticCurvePublicNumbers.public_key(), load_der_public_key() and load_pem_public_key() functions do not verify that the point belongs to the expected prime-order subgroup of the curve. This missing validation allows an attacker to provide a public key point P from a small-order subgroup. This can lead to security issues in various situations, such as the most commonly used signature verification (ECDSA) and shared key negotiation (ECDH). When the victim computes the shared secret as S = [victim_private_key]P via ECDH, this leaks information about victim_private_key mod (small_subgroup_order). For curves with cofactor > 1, this reveals the least significant bits of the private key. When these weak public keys are used in ECDSA , it's easy to forge signatures on the small subgroup. Only SECT curves are impacted by this. This vulnerability is fixed in 46.0.5."},{"lang":"es","value":"Criptografía es un paquete diseñado para exponer primitivas criptográficas y recetas a los desarrolladores de Python. Antes de la versión 46.0.5, las funciones public_key_from_numbers (o EllipticCurvePublicNumbers.public_key()), EllipticCurvePublicNumbers.public_key(), load_der_public_key() y load_pem_public_key() no verifican que el punto pertenezca al subgrupo de orden primo esperado de la curva. Esta validación faltante permite a un atacante proporcionar un punto P de clave pública de un subgrupo de orden pequeño. Esto puede llevar a problemas de seguridad en varias situaciones, como la verificación de firma (ECDSA) y la negociación de clave compartida (ECDH) más comúnmente utilizadas. Cuando la víctima calcula el secreto compartido como S = [victim_private_key]P a través de ECDH, esto filtra información sobre victim_private_key mod (orden_subgrupo_pequeño). Para curvas con cofactor > 1, esto revela los bits menos significativos de la clave privada. Cuando estas claves públicas débiles se utilizan en ECDSA, es fácil falsificar firmas en el subgrupo pequeño. Solo las curvas SECT se ven afectadas por esto. Esta vulnerabilidad está corregida en la versión 46.0.5."}],"metrics":{"cvssMetricV40":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:N/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","baseScore":8.2,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"HIGH","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","exploitMaturity":"NOT_DEFINED","confidentialityRequirement":"NOT_DEFINED","integrityRequirement":"NOT_DEFINED","availabilityRequirement":"NOT_DEFINED","modifiedAttackVector":"NOT_DEFINED","modifiedAttackComplexity":"NOT_DEFINED","modifiedAttackRequirements":"NOT_DEFINED","modifiedPrivilegesRequired":"NOT_DEFINED","modifiedUserInteraction":"NOT_DEFINED","modifiedVulnConfidentialityImpact":"NOT_DEFINED","modifiedVulnIntegrityImpact":"NOT_DEFINED","modifiedVulnAvailabilityImpact":"NOT_DEFINED","modifiedSubConfidentialityImpact":"NOT_DEFINED","modifiedSubIntegrityImpact":"NOT_DEFINED","modifiedSubAvailabilityImpact":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED"}}],"cvssMetricV31":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N","baseScore":6.5,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"REQUIRED","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"NONE","availabilityImpact":"NONE"},"exploitabilityScore":2.8,"impactScore":3.6}]},"weaknesses":[{"source":"security-advisories@github.com","type":"Secondary","description":[{"lang":"en","value":"CWE-345"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:cryptography.io:cryptography:*:*:*:*:*:python:*:*","versionEndExcluding":"46.0.5","matchCriteriaId":"CB473C4C-52CE-495D-B97D-9B4188A10313"}]}]}],"references":[{"url":"https://github.com/pyca/cryptography/commit/0eebb9dbb6343d9bc1d91e5a2482ed4e054a6d8c","source":"security-advisories@github.com","tags":["Patch"]},{"url":"https://github.com/pyca/cryptography/security/advisories/GHSA-r6ph-v2qm-q3c2","source":"security-advisories@github.com","tags":["Vendor Advisory"]},{"url":"http://www.openwall.com/lists/oss-security/2026/02/10/4","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Mailing List","Third Party Advisory"]}]}}]}