CVE-2026-6967
Full vulnerability record from the local CVENow database.
Description
Missing expiration, hash, and length enforcement in delegated metadata validation in awslabs/tough before tough-v0.22.0 allows remote authenticated users with delegated signing authority to bypass TUF specification integrity checks for delegated targets metadata and poison the local metadata cache, because load_delegations does not apply the same validation checks as the top-level targets metadata path. We recommend you upgrade to tough-v0.22.0 / tuftool-v0.15.0.
Severity
HIGH
CVSS score
7.1
(v4.0)
Vulnerability status
Modified
Source identifier
ff89ba41-3aa1-4d27-914a-91399e9639e5
Published
2026-04-24 20:16:29.020000
Last modified
2026-10-26 21:10:00.170000
View original CVE JSON
{
"id": "CVE-2026-6967",
"sourceIdentifier": "ff89ba41-3aa1-4d27-914a-91399e9639e5",
"published": "2026-04-24T20:16:29.020",
"lastModified": "2026-10-26T21:10:00.170",
"vulnStatus": "Modified",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "Missing expiration, hash, and length enforcement in delegated metadata validation in awslabs/tough before tough-v0.22.0 allows remote authenticated users with delegated signing authority to bypass TUF specification integrity checks for delegated targets metadata and poison the local metadata cache, because load_delegations does not apply the same validation checks as the top-level targets metadata path.\n\n\n\nWe recommend you upgrade to tough-v0.22.0 / tuftool-v0.15.0."
},
{
"lang": "es",
"value": "Falta de aplicación de la caducidad, el hash y la longitud en la validación de metadatos delegados en awslabs/tough anterior a tough-v0.22.0 permite a usuarios remotos autenticados con autoridad de firma delegada eludir las comprobaciones de integridad de la especificación TUF para los metadatos de objetivos delegados y envenenar la caché de metadatos local, porque load_delegations no aplica las mismas comprobaciones de validación que la ruta de metadatos de objetivos de nivel superior.\n\nRecomendamos actualizar a tough-v0.22.0 / tuftool-v0.15.0."
}
],
"affected": [
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"affectedData": [
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"product": "tough",
"defaultStatus": "unaffected",
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"lessThanOrEqual": "0.21",
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"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",
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"modifiedSubConfidentialityImpact": "NOT_DEFINED",
"modifiedSubIntegrityImpact": "NOT_DEFINED",
"modifiedSubAvailabilityImpact": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"valueDensity": "NOT_DEFINED",
"vulnerabilityResponseEffort": "NOT_DEFINED",
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