CVE-2026-18022

8.8 highEPSS 0.6%

High (8.8) in pgvector project pgvector. EPSS 0.6% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

8.8 high

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

EPSS: 0.6% chance of exploitation in the next 30 days; higher than 48% of CVEs (scores of 2026-11-01)
CWEs: CWE-190, CWE-787
Published: 2026-07-29
Modified: 2026-08-20
Record from: the NVD, synced 2026-10-19

Affected

pgvector_project:pgvector

References

https://github.com/pgvector/pgvector/commit/636a92a3395d2e036ffd40d07aeb400a708ae104
https://github.com/pgvector/pgvector/issues/1006

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