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Vulnerability record · CVE-2026-3172 · published 25 February 2026

CVE-2026-3172: Out-of-bounds write vulnerability

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.

8.1 CVSS 3.1 High EPSS 0.57% · top 55.2% CWE-191 · CWE-191CWE-787 · Out-of-bounds write Deferred
8.1CVSS 3.1 base score
0.57%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
1References
17 Jun 2026Last modified by NVD

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.

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

References

LinkTags
https://github.com/pgvector/pgvector/issues/959

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Source: NIST National Vulnerability Database (record CVE-2026-3172), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.