8.8

CVE-2026-18022

pgvector buffer overflow via integer wraparound in IVFFlat index build on 32-bit systems

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Pgvector ProjectPgvector SwPlatformpostgresql Version < 0.8.6
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.34% 0.269
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
f86ef6dc-4d3a-42ad-8f28-e6d5547a5007 8.8 2.8 5.9
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE-190 Integer Overflow or Wraparound

The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.

CWE-787 Out-of-bounds Write

The product writes data past the end, or before the beginning, of the intended buffer.

https://github.com/pgvector/pgvector/issues/1006
Vendor Advisory
Issue Tracking
https://github.com/pgvector/pgvector/commit/636a92a3395d2e036ffd40d07aeb400a708ae104
Patch