CVE-2026-3172HIGH 8.1EPSS p18.1%

CVE-2026-3172CVE-2026-3172

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.

Scoring

CVSS 3.18.1 (HIGH)
VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
EPSS0.26% probability of exploitation · percentile 18.1% · 2026-08-02T12:03:13Z
Published2026-02-25
Last modified2026-04-15

Underlying weaknesses· 2

CWE-191CWE-787

References

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

2

TypeTargetConfidenceTier
WeaknessInteger Underflow (Wrap or Wraparound)cwe-1910%live
WeaknessOut-of-bounds Writecwe-7870%live

Related by meaning· 6

Nearest entities by semantic similarity across the cs-graph corpus.

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Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.