CVE-2026-19385: Heap-based Buffer Overflow in PostgreSQL
CVE-2026-19385 is a heap-based buffer overflow vulnerability in PostgreSQL's pg_dump utility related to handling long function transform lists. This flaw allows an object creator to execute arbitrary code with the privileges of the operating system user running pg_dump by supplying a crafted transform list. Versions prior to PostgreSQL 18.6, 17.11, 16.15, 15.19, and 14.24 are affected.
AI Analysis
Technical Summary
This vulnerability involves a heap buffer overflow in the pg_dump tool of PostgreSQL when processing long function transform lists. An attacker who can create objects in the database can exploit this flaw by crafting a malicious transform list, leading to arbitrary code execution with the OS user privileges of the pg_dump process. The issue affects multiple major PostgreSQL versions before the specified patch levels.
Potential Impact
Successful exploitation allows arbitrary code execution as the operating system user running pg_dump, potentially leading to full compromise of that user's privileges. The vulnerability has a high CVSS score of 8.8, indicating a significant risk to confidentiality, integrity, and availability.
Mitigation Recommendations
Upgrading PostgreSQL to versions 18.6, 17.11, 16.15, 15.19, or 14.24 or later addresses this vulnerability. Users should apply these official fixes to mitigate the risk. No other mitigation guidance is provided or necessary beyond applying the vendor's patches.
CVE-2026-19385: Heap-based Buffer Overflow in PostgreSQL
Description
CVE-2026-19385 is a heap-based buffer overflow vulnerability in PostgreSQL's pg_dump utility related to handling long function transform lists. This flaw allows an object creator to execute arbitrary code with the privileges of the operating system user running pg_dump by supplying a crafted transform list. Versions prior to PostgreSQL 18.6, 17.11, 16.15, 15.19, and 14.24 are affected.
CVSS v3.1
Score 8.8high
Affected software
PostgreSQL
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
This vulnerability involves a heap buffer overflow in the pg_dump tool of PostgreSQL when processing long function transform lists. An attacker who can create objects in the database can exploit this flaw by crafting a malicious transform list, leading to arbitrary code execution with the OS user privileges of the pg_dump process. The issue affects multiple major PostgreSQL versions before the specified patch levels.
Potential Impact
Successful exploitation allows arbitrary code execution as the operating system user running pg_dump, potentially leading to full compromise of that user's privileges. The vulnerability has a high CVSS score of 8.8, indicating a significant risk to confidentiality, integrity, and availability.
Mitigation Recommendations
Upgrading PostgreSQL to versions 18.6, 17.11, 16.15, 15.19, or 14.24 or later addresses this vulnerability. Users should apply these official fixes to mitigate the risk. No other mitigation guidance is provided or necessary beyond applying the vendor's patches.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- PostgreSQL
- Date Reserved
- 2026-08-09T18:54:07.415Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a7dc619bf8831d5393e5406
Added to database: 08/13/2026, 13:26:49 UTC
Last enriched: 09/12/2026, 04:32:11 UTC
Last updated: 09/26/2026, 13:47:43 UTC
Views: 56
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