Vulnerabilities CVE-2026-14677

CVE-2026-14677

High

Open

TLP:CLEAR

PostgreSQL 32-bit pltcl and plperl undersize allocations, via integer wraparound

NVD CVE.org

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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 18.5, 17.11, 16.15, 15.19, and 14.24 are affected.

Details

CVSS Score: 8.8
CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Confidence: 90%
Published: Aug 13, 2026
Last Modified: Aug 13, 2026

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