Bug 2572540 (CVE-2026-116326)

Summary: CVE-2026-116326 postgresql: postgresql: Arbitrary code execution via uncaught exceptions in PL/Perl
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: high    
Version: unspecifiedKeywords: Security
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OS: Linux   
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A flaw was found in PostgreSQL. An authenticated user with permissions to create database objects can exploit uncaught exceptions within the PL/Perl language extension by supplying a crafted Perl object while an existing error is being handled. This issue leads to the reuse of stale memory buffers, potentially resulting in arbitrary code execution or a Denial of Service (DoS).
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Description OSIDB Bzimport 2026-11-12 14:32:10 UTC
Uncaught exceptions in PostgreSQL plperl allow an object creator to cause use of a stale sigjmp_buf, via a tied Perl object, or a Perl object whose overloaded conversion throws while plperl is handling another error.  We have not ruled out arbitrary code execution on some platform.  Versions before PostgreSQL 18.7, 17.12, 16.16, 15.20, and 14.25 are affected.