CVE-2026-6966

MediumCVSS 6.5/10Last modified Oct 20, 2026

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.

Metrics

CVSS 3.1 6.5/10CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

Weakness enumeration

CWE-347

Affected software

No affected versions have been published.

Timeline

Published
Apr 24, 2026
Last modified
Oct 20, 2026
NVD status
Modified

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CVE-2026-6966: Medium severity, CVSS 6.5 | Vulnix