CVE-2026-6966
Analyzed Analyzed - Analysis Complete
BaseFortify

Publication date: 2026-04-24

Last updated on: 2026-05-06

Assigner: AMZN

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.
CVSS Scores
EPSS Scores
Probability:
Percentile:
Meta Information
Published
2026-04-24
Last Modified
2026-05-06
Generated
2026-06-16
EPSS Evaluated
2026-06-15
NVD
CVE-2026-6966
EUVD
EUVD-2026-25627
Affected Vendors & Products
Showing 2 associated CPEs
Vendor Product Version / Range
amazon tough to 0.22.0 (exc)
amazon tuftool to 0.15.0 (exc)
Helpful Resources
Exploitability
CWE
CWE Icon
KEV
KEV Icon
CWE ID Description
CWE-347 The product does not verify, or incorrectly verifies, the cryptographic signature for data.
Attack-Flow Graph
AI Quick Actions
Instant insights powered by AI
AI Quick Actions have not been generated yet.
Chat Assistant
Ask questions about this CVE
Hi! I’m here to help you understand CVE-2026-6966. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70
EPSS Chart