Heap Buffer Overflow Vulnerability in PostgreSQL pg_dump
CVE-2026-19385

8.8HIGH

Key Information:

Vendor

PostgreSQL
Status
Postgresql
Vendor
CVE Published:
13 August 2026

What is CVE-2026-19385?

A heap buffer overflow vulnerability exists in PostgreSQL's pg_dump utility, specifically when handling long function transform lists. This flaw enables an object creator to craft a malicious transform list that can manipulate memory allocation, leading to arbitrary code execution as the operating system user executing pg_dump. This vulnerability affects several versions of PostgreSQL prior to the specified security updates, making systems running outdated versions potentially susceptible to exploitation.

Affected Version(s)

PostgreSQL 18 < 18.5

PostgreSQL 17 < 17.11

PostgreSQL 16 < 16.15

References

https://www.postgresql.org/support/security/CVE-2026-19385/

CVSS V3.1

Score:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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