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CVE-2026-14677 Details

Description

Integer wraparound in PostgreSQL 32-bit builds of pltcl and plperl allows an object creator to cause the server to undersize an allocation and write out-of-bounds via crafted function bodies. This may execute arbitrary code as the operating system user running the database. CVE-2026-6473 had fixed similar problems. Versions before PostgreSQL 18.6, 17.11, 16.15, 15.19, and 14.24 are affected.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: PostgreSQLCVSS-B:8.8 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://www.postgresql.org/support/security/CVE-2026-14677/	PostgreSQL	Vendor Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-190	Integer Overflow or Wraparound	PostgreSQL

Affected Products

Product	Versions
postgresql postgresql	>= 14.0, < 14.24 >= 15.0, < 15.19 >= 16.0, < 16.15 >= 17.0, < 17.11 >= 18.0, < 18.5
CPE cpe:2.3:a:postgresql:postgresql:::::::: Remediation No remediation found in references.

Change History

5 change records found show changes

Date	Action	Recorded By
Aug 29, 2026	CVE Modified	PostgreSQL
Aug 19, 2026	Initial Analysis	[email protected]
Aug 14, 2026	CVE Modified	CISA-ADP
Aug 13, 2026	CVE Modified	CISA-ADP
Aug 13, 2026	New CVE Received	PostgreSQL