PT-2026-22023 · Pgvector · Pgvector

Chungkn From · Published 2026-02-25 · Updated 2026-04-09 · CVE-2026-3172

Positive Technologies (AI Summary)

CVSS v3.1

8.1

High

Base vector

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

Name of the Vulnerable Software and Affected Versions pgvector versions 0.6.0 through 0.8.1

Description A buffer overflow exists in the parallel HNSW index build process within pgvector versions 0.6.0 through 0.8.1. This issue allows a database user to potentially leak sensitive data from other relations or cause the database server to crash. The HNSW index is a component used for efficient similarity search in vector databases. The buffer overflow occurs during the index construction.

Recommendations Update to a version of pgvector later than 0.8.1.

Fix

Integer Underflow

Memory Corruption

Weakness Enumeration

CWE-191

CWE-787

Related Identifiers

CVE-2026-3172

ECHO-6B5C-756E-CDA5

OPENSUSE-SU-2026:10409-1

OPENSUSE-SU-2026:20489-1

SUSE-SU-2026:1068-1

SUSE-SU-2026:21153-1

Affected Products

Pgvector

References · 19

• https://osv.dev/vulnerability/CVE-2026-3172 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-3172 · Security Note
• https://osv.dev/vulnerability/openSUSE-SU-2026:10409-1 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2026-3172 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2026:1068-1 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-3172 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2026:21153-1 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-3172 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2026-3172 · Security Note
• https://ubuntu.com/security/CVE-2026-3172 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2026:20489-1 · Vendor Advisory
• https://github.com/pgvector/pgvector/issues/959 · Note
• https://bugzilla.suse.com/1258945 · Note
• https://twitter.com/VulmonFeeds/status/2026862916520075716 · Twitter Post
• https://twitter.com/CveTodo/status/2026774763956248721 · Twitter Post