CVE-2026-6967
Missing Delegated Metadata Validation in awslabs/tough
CVSS Score
5.9
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-345 |
| Vendor | aws |
| Product | tough |
| Published | Apr 24, 2026 |
| Last Updated | Apr 24, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:L Attack Vector
Network
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
Low
Affected Versions
AWS / tough
All versions affected AWS / tuftool
All versions affected References
aws.amazon.com: https://aws.amazon.com/security/security-bulletins/2026-019-aws/ github.com: https://github.com/awslabs/tough/releases/tag/tough-v0.22.0 github.com: https://github.com/awslabs/tough/releases/tag/tuftool-v0.15.0 crates.io: https://crates.io/crates/tough/0.22.0 crates.io: https://crates.io/crates/tuftool/0.15.0 github.com: https://github.com/awslabs/tough/security/advisories/GHSA-4v58-8p28-2rq3