CVE-2026-128037
gittuf: Policy rules bypassed in the presence of global rules
Description
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.
INFO
Published Date :
Nov. 13, 2026, 4:18 p.m.
Last Modified :
Nov. 13, 2026, 4:18 p.m.
Remotely Exploit :
Yes !
Source :
7fefd608-56a6-419f-a002-fd8543c0710a
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | 7fefd608-56a6-419f-a002-fd8543c0710a | ||||
| CVSS 3.1 | MEDIUM | MITRE-CVE |
Solution
- Update gittuf to a version newer than 0.15.0.
- Review and re-apply policy configurations for namespaces.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-128037.
| URL | Resource |
|---|---|
| https://github.com/gittuf/gittuf/releases/tag/v0.16.0 | |
| https://github.com/gittuf/gittuf/security/advisories/GHSA-qc8j-pcph-6q9x |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-128037 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-128037
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-128037 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-128037 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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New CVE Received by 7fefd608-56a6-419f-a002-fd8543c0710a
Nov. 13, 2026
Action Type Old Value New Value Added Description 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. Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N Added CWE CWE-863 Added Affected New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/128xxx/CVE-2026-128037.json">CVE-2026-128037</a> Added Reference https://github.com/gittuf/gittuf/releases/tag/v0.16.0 Added Reference https://github.com/gittuf/gittuf/security/advisories/GHSA-qc8j-pcph-6q9x