Bug 2429306

Summary: CVE-2026-22703 singularity-ce: Cosign verification accepts any valid Rekor entry under certain conditions [epel-8]
Product: [Fedora] Fedora EPEL Reporter: Jon Moroney <jmoroney>
Component: singularity-ceAssignee: David Trudgian <dtrudg>
Status: CLOSED NOTABUG QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: epel8CC: dtrudg, dwd, go-sig
Target Milestone: ---Keywords: Security, SecurityTracking
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard: {"flaws": ["4fabe5d2-b923-4977-8c22-cef8ae7e5111"]}
Fixed In Version: Doc Type: ---
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Clone Of: Environment:
Last Closed: 2026-01-14 11:49:30 UTC Type: ---
Regression: --- Mount Type: ---
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On:    
Bug Blocks: 2428445    

Description Jon Moroney 2026-01-13 19:41:45 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 2026-01-14 11:49:30 UTC 
SingularityCE isn't affected by this. OCI-SIF cosign compatible signature support in SingularityCE is limited, and doesn't include transaction log (Rekor) functionality.

See: https://docs.sylabs.io/guides/4.3/user-guide/signNverify.html#limitations