Bug 2433573

Summary:	CVE-2026-24137 singularity-ce: sigstore legacy TUF client allows for arbitrary file writes with target cache path traversal [epel-9]
Product:	[Fedora] Fedora EPEL	Reporter:	Jon Moroney <jmoroney>
Component:	singularity-ce	Assignee:	David Trudgian <dtrudg>
Status:	CLOSED NOTABUG	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	epel9	CC:	dtrudg, dwd, go-sig
Target Milestone:	---	Keywords:	Security, SecurityTracking
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:	{"flaws": ["a44ea10f-af2b-4305-85db-240053024dd0"]}
Fixed In Version:		Doc Type:	---
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2026-02-09 12:04:04 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:
Bug Blocks:	2432246

Description Jon Moroney 2026-01-27 21:37:55 UTC

Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.

Comment 1 David Trudgian 2026-02-09 12:04:04 UTC

SingularityCE does not use the legacy TUF client directly. In addition, it does not use cosign routines which call the legacy TUF client for verification - it calls into sigstore verification routines directly, verifying against simple keys only. There is no TUF root support.