Bug 2547211 (CVE-2026-106496)

Summary: CVE-2026-106496 plugin-catalog-backend: plugin-catalog-backend: Unintended file access via inconsistent location type enforcement
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: low Docs Contact:
Priority: low    
Version: unspecifiedCC: abarbaro, alizardo, dschmidt, ikhan, jchui, jhe, jlanda, kshier, ktsao, nboldt, oaljalju, psrna, rbobbitt, simaishi, stcannon, yguenane
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in the Backstage plugin-catalog-backend component. Due to inconsistent enforcement of allowed location types during catalog processing, an authenticated remote attacker can submit location targets that should be restricted under specific configurations. This flaw can enable the backend service to process unauthorized locations, potentially leading to unintended file access on the host system.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description OSIDB Bzimport 2026-10-06 21:31:36 UTC
Backstage is an open framework for building developer portals. Prior to 3.9.1, the @backstage/plugin-catalog-backend package is affected by inconsistent enforcement of allowed location types during catalog processing. Under certain configurations, the catalog backend could process location types that were not intended to be allowed, potentially leading to unintended file access on the backend host. This issue is fixed in version 3.9.1.