CVE-2026-6967: awslabs/tough is Missing Delegated Metadata Validation
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.
References
- aws.amazon.com/security/security-bulletins/2026-019-aws
- crates.io/crates/tough/0.22.0
- crates.io/crates/tuftool/0.15.0
- github.com/advisories/GHSA-4v58-8p28-2rq3
- github.com/awslabs/tough/releases/tag/tough-v0.22.0
- github.com/awslabs/tough/releases/tag/tuftool-v0.15.0
- github.com/awslabs/tough/security/advisories/GHSA-4v58-8p28-2rq3
- nvd.nist.gov/vuln/detail/CVE-2026-6967
Code Behaviors & Features
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