CVE-2026-18022CWE-190CWE-787

CVE-2026-18022

High · published July 30, 2026

CVSS v3.1
8.8
EPSS
1%
Percentile
48.1
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
8.8 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00601 · 48.1th percentile
Weaknesses
CWE-190 · Integer Overflow or Wraparound; CWE-787 · Out-of-bounds Write
Published
2026-07-30T00:17Z
Affected products (1)
ProductVersionsFixed in
pgvector_project/pgvector< 0.8.60.8.6
References (2)
https://github.com/pgvector/pgvector/commit/636a92a3395d2e036ffd40d07aeb400a708ae104 · f86ef6dc-4d3a-42ad-8f28-e6d5547a5007https://github.com/pgvector/pgvector/issues/1006 · f86ef6dc-4d3a-42ad-8f28-e6d5547a5007
EPSS history
Timeline
  • 29 JUL 18:55Z
    pgvector buffer overflow via integer wraparound in IVFFlat index build on 32-bit systems
    cvelistv5