CVE-2026-128036
gittuf: Invalid intermediate policies trusted when the policy apply workflow is bypassed
CVSS Score
2.3
EPSS Score
0.0%
EPSS Percentile
0th
In gittuf 0.4.0 through 0.16.0, when a policy update appears within the range of reference state log entries being verified, verification checks only the root of trust signatures of the new policy and not the signatures of its other metadata (rule files). A user trusted to push to the repository who bypasses gittuf policy apply and writes the policy reference and reference state log directly can make an invalid policy apply during verification, weakening or strengthening the rules for later changes. The update is still recorded in the reference state log.
| CWE | CWE-863 |
| Vendor | gittuf |
| Product | gittuf |
| Published | Nov 13, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N Attack Vector
Local
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
None
Affected Versions
gittuf / gittuf
0.4.0 < 0.17.0