GHSA-4v58-8p28-2rq3

Source

https://github.com/advisories/GHSA-4v58-8p28-2rq3

Import Source

https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/05/GHSA-4v58-8p28-2rq3/GHSA-4v58-8p28-2rq3.json

JSON Data

https://api.osv.dev/v1/vulns/GHSA-4v58-8p28-2rq3

Aliases

CVE-2026-6967

Related

CGA-774j-r4wh-gwm2

Published

2026-05-05T18:46:48Z

Modified

2026-05-15T20:44:22.855963741Z

Severity

5.9 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:L CVSS Calculator
7.1 (High) CVSS_V4 - 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 CVSS Calculator

Summary

awslabs/tough is Missing Delegated Metadata Validation

Details

Summary

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.

Impact

The tough library, prior to 0.22.0, does not properly verify delegated target metadata. It allows someone with write access to the metadata to serve expired or otherwise invalid targets from a TUF repository which tough will then trust rather than reject.

Impacted Versions:

tough 0.9.0 through 0.21.x, tuftool through 0.14.x

Patches

This issue has been addressed in tough version 0.22.0 and tuftool version 0.15.0. We recommend upgrading to the latest version and ensuring any forked or derivative code is patched to incorporate the new fixes.

Workarounds

No workarounds to this issue are known.

References

CVE-2026-6967 If there are any questions or comments about this advisory, please contact [AWS/Amazon] Security via the vulnerability reporting page or directly via email to aws-security@amazon.com. Please do not create a public GitHub issue.

Acknowledgement

Amazon Web Services Labs would like to thank Oleh Konko of 1seal for collaborating on this issue through the coordinated vulnerability disclosure process.

Database specific

{
    "cwe_ids": [
        "CWE-345"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-05-05T18:46:48Z",
    "nvd_published_at": "2026-04-24T20:16:29Z",
    "severity": "HIGH"
}

References

Affected packages

crates.io / tough

Package

Name: tough; View open source insights on deps.dev
Purl: pkg:cargo/tough

Affected ranges

Type: SEMVER
Events: Introduced

0.9.0

Fixed

0.22.0

Database specific

source

"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/05/GHSA-4v58-8p28-2rq3/GHSA-4v58-8p28-2rq3.json"

crates.io / tuftool

Package

Name: tuftool; View open source insights on deps.dev
Purl: pkg:cargo/tuftool

Affected ranges

Type: SEMVER
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

0.15.0

Database specific

source

"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/05/GHSA-4v58-8p28-2rq3/GHSA-4v58-8p28-2rq3.json"