CVE-2026-19385: Heap-based Buffer Overflow in PostgreSQL
A heap-based buffer overflow vulnerability exists in PostgreSQL's pg_dump utility when processing long function transform lists. This flaw allows an attacker who can create objects in the database to execute arbitrary code with the privileges of the operating system user running pg_dump. The vulnerability affects multiple PostgreSQL versions prior to 18.5, 17.11, 16.15, 15.19, and 14.24. The CVSS score is 8.8, indicating a high severity issue.
AI Analysis
Technical Summary
CVE-2026-19385 is a heap buffer overflow vulnerability in PostgreSQL's pg_dump tool related to handling long function transform lists. An attacker with the ability to create database objects can exploit this flaw to execute arbitrary code as the OS user running pg_dump. The vulnerability affects PostgreSQL versions before 18.5, 17.11, 16.15, 15.19, and 14.24. No official remediation level or patch links are provided in the source data, and no known exploits are reported in the wild as of the publication date.
Potential Impact
Successful exploitation allows arbitrary code execution with the privileges of the operating system user running pg_dump. This can lead to full compromise of the system context under which pg_dump operates, potentially resulting in data loss, unauthorized access, or system control.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, avoid running pg_dump on untrusted databases or restrict the ability to create objects to trusted users only.
CVE-2026-19385: Heap-based Buffer Overflow in PostgreSQL
Description
A heap-based buffer overflow vulnerability exists in PostgreSQL's pg_dump utility when processing long function transform lists. This flaw allows an attacker who can create objects in the database to execute arbitrary code with the privileges of the operating system user running pg_dump. The vulnerability affects multiple PostgreSQL versions prior to 18.5, 17.11, 16.15, 15.19, and 14.24. The CVSS score is 8.8, indicating a high severity issue.
CVSS v3.1
Score 8.8high
Affected software
pkg:deb/postgresql/postgresqlRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-19385 is a heap buffer overflow vulnerability in PostgreSQL's pg_dump tool related to handling long function transform lists. An attacker with the ability to create database objects can exploit this flaw to execute arbitrary code as the OS user running pg_dump. The vulnerability affects PostgreSQL versions before 18.5, 17.11, 16.15, 15.19, and 14.24. No official remediation level or patch links are provided in the source data, and no known exploits are reported in the wild as of the publication date.
Potential Impact
Successful exploitation allows arbitrary code execution with the privileges of the operating system user running pg_dump. This can lead to full compromise of the system context under which pg_dump operates, potentially resulting in data loss, unauthorized access, or system control.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, avoid running pg_dump on untrusted databases or restrict the ability to create objects to trusted users only.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- PostgreSQL
- Date Reserved
- 2026-08-09T18:54:07.415Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a7dc619bf8831d5393e5406
Added to database: 08/13/2026, 13:26:49 UTC
Last enriched: 08/13/2026, 13:41:44 UTC
Last updated: 08/13/2026, 13:41:44 UTC
Views: 3
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