Bug 2572564 (CVE-2026-120152)

Summary: CVE-2026-120152 postgresql: postgresql: Information disclosure via use-after-free in pg_show_all_settings()
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 can trigger a use-after-free vulnerability by loading a module while the pg_show_all_settings() function is scanning custom-variable placeholders that the module replaces and frees. Successful exploitation allows the user to read internal memory contents, resulting in unauthorized information disclosure.
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Description OSIDB Bzimport 2026-11-12 14:33:45 UTC 
Use after free in PostgreSQL pg_show_all_settings() allows a database user to retrieve memory contents, via loading a module while the function is scanning custom-variable placeholders that the module replaces and frees.  Within major versions 16-18, minor versions before PostgreSQL 18.7, 17.12, and 16.16 are affected.  Versions before PostgreSQL 16 are unaffected.