Bug 2515318 (CVE-2026-6470)

Summary: CVE-2026-6470 postgresql: PostgreSQL: Denial of Service via missing authorization in DDL commands
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
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 was found in PostgreSQL where missing authorization checks in DDL commands allow an authenticated user to create unauthorized dependencies on a data type (such as when assigning a range subtype or referencing the type in an SQL expression). This allows the user to block legitimate owners from altering or dropping that type, resulting in a targeted denial-of-service condition on the affected database object.
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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: 2527374, 2527377    
Bug Blocks:    

Description OSIDB Bzimport 2026-08-13 13:29:13 UTC 
Missing authorization in PostgreSQL DDL commands allows an object creator to achieve denial of service against ALTER and DROP of the type, via creating a dependency on the type.  Many DDL operations did check the privilege, but assigning a range subtype and referencing the type from an SQL expression did not.  Versions before PostgreSQL 18.5, 17.11, 16.15, 15.19, and 14.24 are affected.