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CVE-2026-6967

MEDIUM

5.9

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.

CVE Details

CVSS v3.1 Score5.9

SeverityMEDIUM

CVSS VectorCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:L

Attack VectorNETWORK

ComplexityHIGH

Privileges RequiredLOW

User InteractionNONE

Published4/24/2026

Last Modified4/24/2026

Sourcenvd

Honeypot Sightings0

Weaknesses (CWE)

CWE-345

References

https://aws.amazon.com/security/security-bulletins/2026-019-aws/(ff89ba41-3aa1-4d27-914a-91399e9639e5)

https://crates.io/crates/tough/0.22.0(ff89ba41-3aa1-4d27-914a-91399e9639e5)

https://crates.io/crates/tuftool/0.15.0(ff89ba41-3aa1-4d27-914a-91399e9639e5)

https://github.com/awslabs/tough/releases/tag/tough-v0.22.0(ff89ba41-3aa1-4d27-914a-91399e9639e5)

https://github.com/awslabs/tough/releases/tag/tuftool-v0.15.0(ff89ba41-3aa1-4d27-914a-91399e9639e5)

https://github.com/awslabs/tough/security/advisories/GHSA-4v58-8p28-2rq3(ff89ba41-3aa1-4d27-914a-91399e9639e5)

IOC Correlations

No correlations recorded

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