CVE-2026-3172

High severity, CVSS 8.1. EPSS: 0.6% chance of exploitation in the next 30 days.

Buffer overflow in parallel HNSW index build in pgvector 0.6.0 through 0.8.1 allows a database user to leak sensitive data from other relations or crash the database server.

Published 2026-02-25. Last modified 2026-06-17.