Description

Improper verification of cryptographic signature uniqueness in delegated role validation in awslabs/tough before tough-v0.22.0 allows remote authenticated users to bypass the TUF signature threshold requirement by duplicating a valid signature, causing the client to accept forged delegated role metadata. We recommend you upgrade to tough-v0.22.0 / tuftool-v0.15.0.

INFO

Published Date :

2026-04-24T19:38:24.907Z

Last Modified :

2026-04-24T20:15:28.842Z

Source :

AMZN
AFFECTED PRODUCTS

The following products are affected by CVE-2026-6966 vulnerability.

No data.

REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-6966.

URL Resource
https://aws.amazon.com/security/security-bulletins/2026-019-aws/ cve-icon cve-icon
https://crates.io/crates/tough/0.22.0 cve-icon cve-icon
https://crates.io/crates/tuftool/0.15.0 cve-icon cve-icon
https://github.com/awslabs/tough/releases/tag/tough-v0.22.0 cve-icon cve-icon
https://github.com/awslabs/tough/releases/tag/tuftool-v0.15.0 cve-icon cve-icon
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CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
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SS Confidentiality
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Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact