High8.8Red Hat Linux

High [CVE-2026-19385] PostgreSQL pg_dump: Arbitrary code execution via crafted transform lists

This high-severity Red Hat Linux advisory covers CVE-2026-19385 affecting Red Hat Hardened Images, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8.

CVE-2026-19385 Published Aug 13, 2026Updated by vendor Aug 13, 2026

CVE-2026-19385

Affected products & platforms

Red Hat LinuxRed Hat Enterprise Linux

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Summary

Heap buffer overflow in PostgreSQL pg_dump of long function transform lists allows an object creator to execute arbitrary code as the operating system user running pg_dump, via a crafted transform list. Versions before PostgreSQL 18.5, 17.11, 16.15, 15.19, and 14.24 are affected.

An authenticated object creator can exploit this by providing a specially crafted transform list. Attackers with object-creation privileges can use crafted function transform lists to run OS commands as the backup user.

Red Hat severity: Important — CVSS 8.8 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H). Weakness: CWE-122.

Affected Red Hat products: Red Hat Hardened Images; Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9; Self-service automation portal 2. Red Hat fixing advisory: RHSA-2026:57198.

Affected products named by the advisory: Red Hat package: postgresql16; Red Hat package: postgresql18.

Affected versions

< 18.5
< 17.11
< 16.15
< 15.19
< 14.24

Official advisory · high-confidence parse· fetched 3 hours ago·verify at source

Fixed versions

postgresql17-main-17.11-1.hum1
RHSA-2026:57198

Official advisory · high-confidence parse· fetched 3 hours ago·verify at source

Mitigation checklist

Recommended fix / mitigation

Restrict database user privileges, particularly object creation, to trusted administrators only. Ensure that `pg_dump` operations are performed by users with the least necessary operating system privileges to limit the impact of potential code execution.

Official advisory · high-confidence parse· fetched 3 hours ago·verify at source

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