CVE-2026-18022
High
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.
SeverityHigh
CVSS8.8
Exploit probability—
ProductPgvector
PublishedJul 29, 2026
First seenJul 29, 2026
Weakness typeCWE-190Integer overflowCWE-787Out-of-bounds write
How to fix
Update
- pgvector_project pgvector0.8.6 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| pgvector_project pgvector | v < 0.8.6 | 0.8.6 |
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