CVE-2026-6967

Missing Delegated Metadata Validation in awslabs/tough

Published: Apr 24, 2026Updated: May 6, 2026 Sources: CVE List NVDCWE-345

5.9MEDIUM

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.

No summary for this CVE yet.

CVSS Vector Breakdown

Exploitability

AV:NAttack Vector

Network

AC:HAttack Complexity

High

PR:LPrivileges Required

Low

UI:NUser Interaction

None

Scope

S:UScope

Unchanged

Impact

C:NConfidentiality

None

I:HIntegrity

High

A:LAvailability

Low

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Weaknesses

CWE-345

Affected Products

amazon

commercial·US

toughSaaS

Cloud & SaaS / saas-application

tuftoolOn-premDev Tool

DevTools & CI / build-test-tools

AWS

commercial·US

toughOn-premNetwork Device

Cloud & SaaS

tuftoolSaaS

Cloud & SaaS / cloud-platform

Exploitability

Official Patch Available

Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique

Collection

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References

https://aws.amazon.com/security/security-bulletins/2026-019-aws/

aws.amazon.com

https://crates.io/crates/tough/0.22.0

crates.io

https://crates.io/crates/tuftool/0.15.0

crates.io

and 3 more references View all →

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