CVE-2026-55769 - Overriding operators can lead to RCE - Mehmet Ince @mdisec - Vulnerability Researcher | Building security products | Security Advisor | Amateur Muay Thai fighter
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CVE-2026-55769 – Overriding operators can lead to RCE
Jun 18, 2026
Description
The CloudNativePG (CNPG) instance manager opens superuser connections to managed PostgreSQL databases without pinning search_path in the connection startup packet. A role holding DATABASE OWNER on any managed database — a role CNPG
creates by default at cluster bootstrap — can plant attacker-controlled overloads of built-in operators (for example =, >) in the public schema and re-target the database- or role-level search_path so those overloads resolve before pg_catalog.
Vulnerability Information
Product / Framework: CloudNative PostgreSQL
Vendor Domain: cloudnative-pg.io
Vulnerability Type:
Misconfiguration
CVE Details:
View Full CVE Details →
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