CVE-2026-3172
pgvector buffer overflow in parallel HNSW index build
CVSS Score
8.1
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-191 CWE-787 |
| Vendor | n/a |
| Product | pgvector |
| Published | Feb 25, 2026 |
| Last Updated | Feb 26, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
n/a / pgvector
0.8.0 < 0.8.2 0.7.0 0.6.0
Credits
Thanks to chungkn from OneMount Group for reporting this.