CVE-2026-3172

HIGH

pgvector 0.6.0-0.8.1 - Buffer Overflow

Title source: llm

Description

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.

References (1)

[Issue Tracking] https://github.com/pgvector/pgvector/issues/959

Scores

CVSS v3 8.1

EPSS 0.0005

EPSS Percentile 14.4%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

Classification

CWE

CWE-787 CWE-191

Status draft

Timeline

Published Feb 25, 2026

Tracked Since Feb 26, 2026