Bug 2547210 (CVE-2026-106497)

Summary: CVE-2026-106497 plugin-catalog-backend: plugin-catalog-backend: Information disclosure via inconsistent permission evaluation
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
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 Backstage's plugin-catalog-backend component. Inconsistent evaluation of catalog property permissions can lead to unauthorized information disclosure. In environments that rely on value-based permission rules to enforce access controls, an authenticated attacker can bypass intended restrictions and view sensitive catalog entity data.
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Description OSIDB Bzimport 2026-10-06 21:31:33 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 catalog property permission evaluation. In deployments that use affected value-based catalog permission conditions as a confidentiality boundary, an authenticated user could receive catalog entity data that policy authors intended to restrict. This issue is fixed in version 3.9.1.