Bug 2431929 (CVE-2026-23992)

Summary:	CVE-2026-23992 github.com/theupdateframework/go-tuf/v2: go-tuf improperly validates the configured threshold for delegations
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security DevOps Team <prodsec-dev>
Status:	NEW ---	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	akoudelk, dfreiber, drow, eborisov, jburrell, lball, lbragsta, ljawale, luizcosta, ngough, nweather, rbobbitt, sdawley, teagle, veshanka, vkumar, wenshen
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	---
Doc Text:	An integrity check flaw has been discovered in go-tuf. A compromised or misconfigured TUF repository can have the configured value of signature thresholds set to 0, which effectively disables signature verification. This can lead to unauthorized modification to TUF metadata files at rest, or during transit as no integrity checks are made.	Story Points:	---
Clone Of:		Environment:
Last Closed:		Type:	---
Regression:	---	Mount Type:	---
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Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	2433100, 2433102, 2433104, 2433106, 2433107
Bug Blocks:

Description OSIDB Bzimport 2026-01-22 03:01:41 UTC

go-tuf is a Go implementation of The Update Framework (TUF). Starting in version 2.0.0 and prior to version 2.3.1, a compromised or misconfigured TUF repository can have the configured value of signature thresholds set to 0, which effectively disables signature verification. This can lead to unauthorized modification to TUF metadata files is possible at rest, or during transit as no integrity checks are made. Version 2.3.1 fixes the issue. As a workaround, always make sure that the TUF metadata roles are configured with a threshold of at least 1.