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 0.0006

EPSS Percentile 16.9%

Attack Vector NETWORK

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

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-191 CWE-787

Status published

Products (3)

n/a/pgvector 0.6.0

n/a/pgvector 0.7.0

n/a/pgvector 0.8.0 - 0.8.2

Published Feb 25, 2026

Tracked Since Feb 26, 2026