CVE-2026-3172
High
Description
Buffer overflow in parallel HNSW index build in pgvector 0.6.0 through 0.8.1 allows a database user to leak sensitive data from other relations or crash the database server.
SeverityHigh
CVSS8.1
Exploit probability—
ProductPgvector
PublishedFeb 25, 2026
First seenFeb 25, 2026
Weakness typeCWE-191CWE-191CWE-787Out-of-bounds write
How to fix
Update
- pgvector0.8.2 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| pgvector | 0.8.0 ≤ v < 0.8.2, 0.7.0, 0.6.0 | 0.8.2 |
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