CVE-2026-128035

gittuf: Propagated controller policies not loaded during verification

Medium 5.5

Description

In gittuf 0.10.0 through 0.17.0, the verification workflow does not load policy updates that are propagated from an upstream (controller) repository and recorded in the reference state log after the first entry being verified. Only the propagated policy in effect at the start of verification is applied, so later controller changes to global rules, such as threshold requirements and force-push blocks, are ignored and changes that these rules should block pass verification.

Key facts

Published: 13 Nov 2026
Last changed: 13 Nov 2026
Assigned by: Akrites
EPSS: 0.098% likely to be exploited in the next 30 days, higher than 0.758% of CVEs (scores for 15 Nov 2026)

Severity scores

Each score is shown as its source gave it. They are not averaged or merged.

5.5CVSS 3.1, Mediumfrom the CNA (Akrites)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

What to do

Upgrade to gittuf 0.18.0 or later, then run gittuf verify-ref over the full history of each protected reference. Policy propagation has been moved back into gittuf's developer mode.CNA solution statement

Historical context and remediation

This reference retains the original CVE publication date. A recent record update does not mean a new attack occurred.

No separately sourced impact summary is available on this page yet. Consult the description, version data and dated exploitation evidence.

Version statuses below come from the CNA. An “unaffected” version is not necessarily a currently supported release or proof of a patch date. EPSS is a dated risk estimate, not a count of historical attacks.

Read the original CVE record.

Affected products

Vendor	Product	Versions
gittuf	gittuf	Default status: unaffected 0.10.0 up to but excluding 0.18.0 (affected)