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PostgreSQL regexp heap buffer overflow executes arbitrary code

PostgreSQL · CVE-2026-14664
0 news outlets0 CERTs and agencies0 researchers

What is it?

Heap buffer overflow in PostgreSQL regexp allows the query author to execute arbitrary code as the operating system user running the database, via text that would not pass encoding validation. This shares heritage with CVE-2026-2006, but this case involved unanticipated data growth when round-tripped through pg_wchar. Versions before PostgreSQL 18.6, 17.11, 16.15, 15.19, and 14.24 are affected.

Evidence

No coverage recorded yet.

Exploitation

  • Public proof of concept
  • Exploited in the wild
  • Listed as known exploited
CVSS
8.8
EPSS
0.4%
First seen
7 d ago
Status
corroborated

All PostgreSQL vulnerabilities