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.
Published: 2026-04-24
Score: 7.1 High
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

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Tracking

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History

Fri, 24 Apr 2026 21:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 24 Apr 2026 20:45:00 +0000


Fri, 24 Apr 2026 20:00:00 +0000

Type Values Removed Values Added
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.
Title Missing Delegated Metadata Validation in awslabs/tough
Weaknesses CWE-345
References
Metrics cvssV3_1

{'score': 5.9, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:L'}

cvssV4_0

{'score': 7.1, 'vector': 'CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:H/SA:L'}


Subscriptions

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cve-icon MITRE

Status: PUBLISHED

Assigner: AMZN

Published:

Updated: 2026-04-24T20:13:20.016Z

Reserved: 2026-04-24T16:15:46.781Z

Link: CVE-2026-6967

cve-icon Vulnrichment

Updated: 2026-04-24T20:13:08.897Z

cve-icon NVD

Status : Received

Published: 2026-04-24T20:16:29.020

Modified: 2026-04-24T21:16:19.897

Link: CVE-2026-6967

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses