Bug 2572575 (CVE-2026-120146)

Summary: CVE-2026-120146 postgresql: PostgreSQL: Authorization bypass via REASSIGN OWNED command
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
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Priority: medium    
Version: unspecifiedKeywords: Security
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OS: Linux   
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A flaw was found in PostgreSQL. An authenticated database user with limited privileges can bypass authorization checks when executing the REASSIGN OWNED command. This flaw allows the user to reassign database or object ownership without the required administrative privileges, leading to unauthorized modification of database assets.
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Description OSIDB Bzimport 2026-11-12 14:34:23 UTC 
Missing authorization in PostgreSQL REASSIGN OWNED allows a role granted INHERIT but not SET to transfer objects to the granted role.  It also allows reassignment of database ownership without the CREATEDB privilege.  The equivalent ALTER ... OWNER commands block this.  Versions before PostgreSQL 18.7, 17.12, 16.16, 15.20, and 14.25 are affected.