CVE-2026-3172 HIGH

CVE-2026-3172: pgvector buffer overflow in parallel HNSW index build

Vendor N/A
Product pgvector
Weakness CWE-191
Published February 25, 2026
Last update February 26, 2026
View on NVD All CVEs

CVSS base score

8.1/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality High
Integrity None

CVSS vector

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

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

February 25, 2026 CVE published
February 26, 2026 Record updated