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PostgreSQL server undersizes allocations, via integer wraparound

PostgreSQL · CVE-2026-6473
0 news outlets0 CERTs and agencies0 researchers

What is it?

Integer wraparound in multiple PostgreSQL server features allows an unprivileged database user to cause the server to undersize an allocation and write out-of-bounds. This may execute arbitrary code as the operating system user running the database. In applications that pass gigabyte-scale user inputs to the relevant database functions, the application input provider may achieve a segmentation fault. Versions before PostgreSQL 18.4, 17.10, 16.14, 15.18, and 14.23 are affected.

Evidence

No coverage recorded yet.

Exploitation

  • Public proof of concept
  • Exploited in the wild
  • Listed as known exploited
CVSS
8.8
EPSS
1.0%
First seen
7 d ago
Status
corroborated

All PostgreSQL vulnerabilities