7.1

CVE-2026-6967: amazon tough

CVSS: 7.1v4.0HighAnalyzed
AliasesCGA-hr5c-r5gj-qx75GHSA-4v58-8p28-2rq3CGA-q5j9-mh5p-5fwp
Published 24-04-2026Last modified 24-04-2026
Open JSON

Vulnerability summary

CVE-2026-6967 is a high (CVSS 7.1) vulnerability in amazon tough. EPSS estimates a 0.30% chance of exploitation in the next 30 days, higher than 21.5% of scored vulnerabilities.

Overall risk
28/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.1/10
010
High · v4.0 (CVE.org)
EPSS score
0.30%
0%100%
Low · +0.06 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 0 · Related 1
CGA-774J-R4WH-GWM2

Timeline

  1. 24-04-2026
    PublishedVulnerability first disclosed.
  2. 24-04-2026
    Last modifiedVulnerability information updated.

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 metrics

7 scores · 4 sources · 2 versions

EPSS trend

Probability

0.30%

Chance of exploitation in the next 30 days

Percentile

22%

Versus all other CVEs

30-day change

+0.06 pp

From 0.25% on 18-09-2026

18-09-202618-10-2026
EPSS score
0.30%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Amazon2 products
Crates.Io2 products
  • tough≥ 0.9.0, < 0.22.0
  • tuftool< 0.15.0
Chainguard1 product
  • mise< 2026.5.8-r0

3 vendors · 5 products

References

10 links