gittuf up to 0.15.x improper authorization

Summaryinfo

A vulnerability was found in gittuf up to 0.15.x. It has been classified as problematic. This impacts an unknown function. Performing a manipulation results in improper authorization. This vulnerability is reported as CVE-2026-128037. The attack is possible to be carried out remotely. No exploit exists. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in gittuf up to 0.15.x. It has been classified as problematic. This affects an unknown code block. The manipulation with an unknown input leads to a improper authorization vulnerability. CWE is classifying the issue as CWE-285. The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action. This is going to have an impact on integrity. The summary by CVE is:

In 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.

It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2026-128037 since 11/12/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1548.002 according to MITRE ATT&CK.

Upgrading to version 0.16.0 eliminates this vulnerability.

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Productinfo

Name

• gittuf

Version

• 0.1
• 0.2
• 0.3
• 0.4
• 0.5
• 0.6
• 0.7
• 0.8
• 0.9
• 0.10
• 0.11
• 0.12
• 0.13
• 0.14
• 0.15

Website

• Product: https://github.com/gittuf/gittuf/

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