Dashboard / CVE-2026-6966

CVE-2026-6966

HIGH
MEDIUM Priority: 0.02 BB Relevance: 54/100
Published: 2026-04-24 Modified: 2026-10-26 First seen: 2026-10-29 Status: active

Attack Surface

Network No Interaction Integ. Impact

CVSS Vector Breakdown

AV: Network
AC: High
PR: Low
UI: None
S: X
AT: Present
VC: None
VI: High
VA: None

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 (1)

Affected Software (2)

VendorProductVersion
amazon tough < 0.22.0
amazon tuftool < 0.15.0

References & Advisories (6)

Bug Bounty Relevance

54 / 100
✓ Network accessible
✓ No user interaction

CVSS Score

7.0 / 10.0 v4.0
CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:H/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS — Exploitation Probability

0.28%
Raw Score 0.002830
Percentile 20.8%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00283
2026-10-28
0.00283

Intelligence Sources

nvd ref →

External Links