Bug 2524939

Summary: CVE-2026-16239 mingw-postgresql: PostgreSQL: Arbitrary code execution via type confusion in cursor lifecycle [fedora-all]
Product: [Fedora] Fedora Reporter: Srikanth Balasubramanian <sbalasub>
Component: mingw-postgresqlAssignee: Michael Cronenworth <mike>
Status: NEW --- QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: high Docs Contact:
Priority: high    
Version: rawhideCC: mike
Target Milestone: ---Keywords: Security, SecurityTracking
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Hardware: Unspecified   
OS: Unspecified   
Whiteboard: {"flaws": ["bc252fa5-b5a6-4032-84b3-cd61640027f4"]}
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Blocks: 2515316    

Description Srikanth Balasubramanian 2026-08-27 11:50:38 UTC
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.

Type confusion in PostgreSQL "portal"/cursor lifecycle allows a user to execute arbitrary code as the operating system user running the database, via re-creation of a cursor or other portal with different types.  Versions before PostgreSQL 18.5, 17.11, 16.15, 15.19, and 14.24 are affected.