Bug 2515309 (CVE-2026-14666)

Summary: CVE-2026-14666 postgresql: PostgreSQL: Row security caching disregards role modifications leading to unauthorized data access
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: dschmidt, jlanda, kshier, rhel-process-autobot, simaishi, stcannon, teagle, watson-tool-maintainers, yguenane
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A flaw in PostgreSQL allows users to bypass row-level security (RLS) due to incomplete tracking of user role and database ownership changes. Active sessions may continue using cached, outdated security policies, enabling unauthorized read or write access to data. Exploitation requires the attacker to understand the application's specific privilege removal configurations.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Depends On: 2528024, 2528025    
Bug Blocks:    

Description OSIDB Bzimport 2026-08-13 13:27:36 UTC 
Incomplete tracking in PostgreSQL of changes to role membership, role attributes, and database ownership allows a query to continue using cached row-level security policies after those changes require a different policy, via plan reuse.  Stale policies continue until some other event invalidates the cache or connection termination ends the session.  This permits a user to complete reads and modifications that were recently permitted but now forbidden.  An attacker must tailor an attack to a particular application's pattern of privilege removal and role-specific row security policies.  Versions before PostgreSQL 18.5, 17.11, 16.15, 15.19, and 14.24 are affected.