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Vulnerability record · CVE-2026-18022 · published 29 July 2026

CVE-2026-18022: Pgvector project pgvector integer overflow vulnerability

Pgvector Project · Pgvector

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.

8.8 CVSS 3.1 High EPSS 0.60% · top 53.4% CWE-190 · Integer overflowCWE-787 · Out-of-bounds write
8.8CVSS 3.1 base score
0.60%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
20 Aug 2026Last modified by NVD

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.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/pgvector/pgvector/commit/636a92a3395d2e036ffd40d07aeb400a708ae104 Patch
https://github.com/pgvector/pgvector/issues/1006 Issue TrackingVendor Advisory

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-18022), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.