CVE-2026-18022

HIGH CVSS 3.1: 8.8 EPSS 0.60%
Updated Aug 20, 2026
Pgvector_Project
Parameter Value
CVSS 8.8 (HIGH)
Affected Versions before 0.8.6
Fixed In 0.8.6
Type CWE-787 (Out-of-bounds Write), CWE-190 (Integer Overflow)
Vendor Pgvector_Project
Public PoC No

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.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service

CVSS Vector v3.1

Vulnerable Products 1

Configuration From (including) Up to (excluding)
Pgvector_Project Pgvector
cpe:2.3:a:pgvector_project:pgvector:*:*:*:*:*:postgresql:*:*
— 0.8.6