CVE-2026-6967 MEDIUM

CVE-2026-6967: Missing Delegated Metadata Validation in awslabs/tough

Weakness CWE-345
Published April 24, 2026
Last update April 24, 2026
View on NVD All CVEs

CVSS base score

5.9/10
Attack vector Network
Attack complexity High
Privileges required Low
User interaction None
Confidentiality None
Integrity High

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:L

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

April 24, 2026 CVE published
April 24, 2026 Record updated