CVE-2026-18022

HIGH

pgvector buffer overflow via integer wraparound in IVFFlat index build on 32-bit systems

Title source: cna

Description

Integer wraparound in IVFFlat index build in pgvector before 0.8.6 allows a database user to write data out-of-bounds, which could lead to arbitrary code execution. Only 32-bit systems are affected.

References (2)

Core 2

Core References

https://github.com/pgvector/pgvector/issues/1006

https://github.com/pgvector/pgvector/commit/636a92a3395d2e036ffd40d07aeb400a708ae104

View Patch ZIP pw:eip

Scores

CVSS v3 8.8

EPSS 0.0034

EPSS Percentile 26.9%

Attack Vector NETWORK

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

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact total

Details

CWE

CWE-190 CWE-787

Status published

Products (1)

None/pgvector < 0.8.6

Published Jul 29, 2026

Tracked Since Jul 30, 2026