CVE-2026-18022

HighCVSS 8.8/10Last modified Aug 20, 2026

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.

Metrics

CVSS 3.1 8.8/10CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-190 CWE-787

Affected software

Vendor	Product	Versions
n/a	pgvector	< 0.8.6

References

https://github.com/pgvector/pgvector/commit/636a92a3395d2e036ffd40d07aeb400a708ae104Patch
https://github.com/pgvector/pgvector/issues/1006Issue Tracking, Vendor Advisory

Timeline

Published: Jul 29, 2026
Last modified: Aug 20, 2026
NVD status: Analyzed

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