Bug 2515331 (CVE-2026-6469)

Summary: CVE-2026-6469 postgresql: PostgreSQL: Incorrect ownership assignment allows unauthorized statistics modification
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
Status: NEW --- QA Contact:
Severity: low Docs Contact:
Priority: low    
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 was found in PostgreSQL where the ALTER TABLE ALTER TYPE command incorrectly reassigns ownership of dependent statistics objects to the current user. This grants the table owner unauthorized privileges to execute DROP STATISTICS and ALTER STATISTICS while locking out the legitimate owner. The overall impact is limited, as standard DROP TABLE operations still correctly remove the affected objects.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
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Bug Depends On: 2527245, 2527246    
Bug Blocks:    

Description OSIDB Bzimport 2026-08-13 13:31:59 UTC 
Incorrect ownership assignment in PostgreSQL ALTER TABLE ALTER TYPE command reassigns ownership of dependent statistics objects to the current user.  This wrongly allows the table owner to run DROP STATISTICS and ALTER STATISTICS via this improper ownership.  It wrongly denies those commands to the prior statistics object owner.  DROP TABLE remains able to remove statistics objects, so this exploit achieves nothing in many ownership arrangements.  Versions before PostgreSQL 18.5, 17.11, 16.15, 15.19, and 14.24 are affected.