RewindexCVEsAmazon Web Services
CVE-2026-6967: Missing Delegated Metadata Validation in awslabs/tough
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.
Vector CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:L · CWE-345
Tracked companies
Mapped from the CVE’s affected-product data, NVD CPE matches, vendor advisories or package feeds. A mapping means the vendor’s software is named, not that its hosted service was exposed.
Status incidents that name it
No tracked status incident names this CVE.
Affected vendors and products
AWS: toughAWS: tuftool
References
- CVE record on cve.org (opens in new tab)
- NVD entry (opens in new tab)
- aws.amazon.com/security/security-bulletins/2026-019-aws/ (opens in new tab)
- crates.io/crates/tough/0.22.0 (opens in new tab)
- crates.io/crates/tuftool/0.15.0 (opens in new tab)
- github.com/awslabs/tough/releases/tag/tough-v0.22.0 (opens in new tab)
- github.com/awslabs/tough/releases/tag/tuftool-v0.15.0 (opens in new tab)
- github.com/awslabs/tough/security/advisories/GHSA-4v58-8p28-2rq3 (opens in new tab)
- CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (opens in new tab)
- This product uses data from the NVD API but is not endorsed or certified by the NVD. (opens in new tab)
- Known Exploited Vulnerabilities catalog from CISA. (opens in new tab)
- EPSS scores from FIRST (Exploit Prediction Scoring System). (opens in new tab)