gittuf: Policy rules bypassed in the presence of global rules

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-128037
StatePUBLISHED
AssignerAkrites
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-11-13 16:18:59 UTC
Updated2026-11-13 16:18:59 UTC
DescriptionIn gittuf 0.10.0 through 0.15.0, when a minimum threshold global rule and a policy rule protect the same namespace, verification gives the global rule's check over all trusted users in the policy precedence over the policy rule's own authorized users. A user listed in the policy file but not authorized by the policy rule, or fewer users than the rule's threshold, can make changes to the protected namespace that pass verification.

Risk And Classification

Primary CVSS: v3.1 6.5 MEDIUM from 7fefd608-56a6-419f-a002-fd8543c0710a

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

Problem Types: CWE-863 | CWE-863 CWE-863 Incorrect Authorization

VersionSourceTypeScoreSeverityVector
3.17fefd608-56a6-419f-a002-fd8543c0710aSecondary6.5MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
3.1CNACVSS6.5MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
None

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Gittuf Gittuf affected 0.10.0 0.16.0 semver Not specified

References

ReferenceSourceLinkTags
github.com/gittuf/gittuf/releases/tag/v0.16.0 7fefd608-56a6-419f-a002-fd8543c0710a github.com
github.com/gittuf/gittuf/security/advisories/GHSA-qc8j-pcph-6q9x 7fefd608-56a6-419f-a002-fd8543c0710a github.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Arpit Jain (en)

Additional Advisory Data

Solutions

CNA: Upgrade to gittuf 0.16.0 or later, which checks policy rules and global rules independently. Then re-run verification on the repository to make sure the vulnerability was not exploited.

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