VULNERABILITY INTELLIGENCE

CVE-2026-6966

CVSS score5.3 MEDIUM
EPSS probability0.28%
CISA KEVNot currently listed
Published2026-04-24
Last modified2026-10-26
CVSS vectorCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N

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.

Weakness classification

  • ff89ba41-3aa1-4d27-914a-91399e9639e5: CWE-347

Primary references