CVE-2026-6967

HIGH EPSS 15.8%
Published Apr 24, 20262mo ago · Modified Jun 17, 20261w ago
7.1 CVSS 4.0
High
Find Similar
Published Apr 24, 2026 2mo ago
Last Modified Jun 17, 2026 1w ago

Description

Missing expiration, hash, and length enforcement in delegated metadata validation in awslabs/tough before tough-v0.22.0 allows remote authenticated users with delegated signing authority to bypass TUF specification integrity checks for delegated targets metadata and poison the local metadata cache, because load_delegations does not apply the same validation checks as the top-level targets metadata path. We recommend you upgrade to tough-v0.22.0 / tuftool-v0.15.0.

CVSS Details

Base Score
7.1
Exploitability
—
Impact
—
Vector string
CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:H/SA:L/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
Attack Vector Network
Attack Complexity High
Privileges Required Low
User Interaction None
Scope X

Threat Intelligence

EPSS Exploit Probability
15.8% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-345

Affected Products 2

VendorProductVersionRange
amazontough*≥0.9.0  –  <0.22.0
amazontuftool* <0.15.0

References 6

  • aws.amazon.com https://aws.amazon.com/security/security-bulletins/2026-019-aws/
    Vendor Advisory
  • crates.io https://crates.io/crates/tough/0.22.0
    Product
  • crates.io https://crates.io/crates/tuftool/0.15.0
    Product
  • github.com https://github.com/awslabs/tough/releases/tag/tough-v0.22.0
    Release Notes
  • github.com https://github.com/awslabs/tough/releases/tag/tuftool-v0.15.0
    Release Notes
  • github.com https://github.com/awslabs/tough/security/advisories/GHSA-4v58-8p28-2rq3
    Vendor Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.