Bug 2572546 (CVE-2026-116321)

Summary: CVE-2026-116321 postgresql: postgresql: server memory disclosure via improper null termination in array element assignment
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 exploit improper string termination during array element assignment to cause server memory disclosure. By modifying the final byte of a fixed-length name value and passing it to internal routines expecting a null-terminated string, an attacker can read sensitive information from server memory.
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Description OSIDB Bzimport 2026-11-12 14:32:32 UTC 
Improper null termination in PostgreSQL array element assignment allows a database user to disclose server memory, via changing the final byte of a fixed-length name value to a nonzero byte and passing it to code that treats the value as a C string.  Versions before PostgreSQL 18.7, 17.12, 16.16, 15.20, and 14.25 are affected.