CVE-2026-6966

{"id": "CVE-2026-6966", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-6966", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-04-24T20:15:12.033311Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "ff89ba41-3aa1-4d27-914a-91399e9639e5", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.3, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 1.6}, {"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.5, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 2.8}], "cvssMetricV40": [{"type": "Secondary", "source": "ff89ba41-3aa1-4d27-914a-91399e9639e5", "cvssData": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 7.0, "Automatable": "NOT_DEFINED", "attackVector": "NETWORK", "baseSeverity": "HIGH", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:H/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", "exploitMaturity": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "userInteraction": "NONE", "attackComplexity": "HIGH", "attackRequirements": "PRESENT", "privilegesRequired": "LOW", "subIntegrityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "integrityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "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", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED"}}]}, "affected": [{"source": "ff89ba41-3aa1-4d27-914a-91399e9639e5", "affectedData": [{"vendor": "AWS", "product": "tough", "versions": [{"status": "affected", "version": "0.9.0", "versionType": "custom", "lessThanOrEqual": "0.21"}], "defaultStatus": "unaffected"}, {"vendor": "AWS", "product": "tuftool", "versions": [{"status": "affected", "version": "0", "versionType": "custom", "lessThanOrEqual": "0.14"}], "defaultStatus": "unaffected"}]}], "published": "2026-04-24T20:16:28.883", "references": [{"url": "https://aws.amazon.com/security/security-bulletins/2026-019-aws/", "tags": ["Vendor Advisory"], "source": "ff89ba41-3aa1-4d27-914a-91399e9639e5"}, {"url": "https://crates.io/crates/tough/0.22.0", "tags": ["Product"], "source": "ff89ba41-3aa1-4d27-914a-91399e9639e5"}, {"url": "https://crates.io/crates/tuftool/0.15.0", "tags": ["Product"], "source": "ff89ba41-3aa1-4d27-914a-91399e9639e5"}, {"url": "https://github.com/awslabs/tough/releases/tag/tough-v0.22.0", "tags": ["Release Notes"], "source": "ff89ba41-3aa1-4d27-914a-91399e9639e5"}, {"url": "https://github.com/awslabs/tough/releases/tag/tuftool-v0.15.0", "tags": ["Release Notes"], "source": "ff89ba41-3aa1-4d27-914a-91399e9639e5"}, {"url": "https://github.com/awslabs/tough/security/advisories/GHSA-8m7c-8m39-rv4x", "tags": ["Vendor Advisory"], "source": "ff89ba41-3aa1-4d27-914a-91399e9639e5"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Secondary", "source": "ff89ba41-3aa1-4d27-914a-91399e9639e5", "description": [{"lang": "en", "value": "CWE-347"}]}], "descriptions": [{"lang": "en", "value": "Improper verification of cryptographic signature uniqueness in delegated role validation in awslabs/tough before tough-v0.22.0 allows remote authenticated users to bypass the TUF signature threshold requirement by duplicating a valid signature, causing the client to accept forged delegated role metadata.\n\n\n\nWe recommend you upgrade to tough-v0.22.0 / tuftool-v0.15.0."}, {"lang": "es", "value": "Verificaci\u00f3n incorrecta de la unicidad de la firma criptogr\u00e1fica en la validaci\u00f3n de roles delegados en awslabs/tough en versiones anteriores a la tough-v0.22.0 permite a usuarios remotos autenticados eludir el requisito del umbral de firma de TUF duplicando una firma v\u00e1lida, lo que provoca que el cliente acepte metadatos de roles delegados falsificados.\n\nSe recomienda actualizar a tough-v0.22.0 / tuftool-v0.15.0."}], "lastModified": "2026-10-26T21:10:00.170", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:amazon:tough:*:*:*:*:*:rust:*:*", "vulnerable": true, "matchCriteriaId": "B861C5C6-71EB-48B0-B55E-71BBF56DF2BF", "versionEndExcluding": "0.22.0"}, {"criteria": "cpe:2.3:a:amazon:tuftool:*:*:*:*:*:rust:*:*", "vulnerable": true, "matchCriteriaId": "E83215AA-4B4B-44C1-A062-B7212CF33EF5", "versionEndExcluding": "0.15.0"}], "operator": "OR"}]}], "sourceIdentifier": "ff89ba41-3aa1-4d27-914a-91399e9639e5"}