Vulnerability 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 Score
8.8
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Related Weaknesses (CWE)
References
- https://github.com/pgvector/pgvector/commit/636a92a3395d2e036ffd40d07aeb400a708a
- https://github.com/pgvector/pgvector/issues/1006
FAQ
What is CVE-2026-18022?
CVE-2026-18022 is a vulnerability with a CVSS score of 8.8 (HIGH). 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.
How severe is CVE-2026-18022?
CVE-2026-18022 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-18022?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.