CVE-2026-5423 is a Neo4j GraphQL authentication bypass letting unauthenticated clients forge JWT claims and read subscription data. Related Posts: CVE-2026-27912: PoC Released for SYSTEM Privilege Flaw CVE-2026-58231 (CVSS 10.0) and Code Injection RCE Flaws Top SAP August 2026 Patch Day Windows PnP Attack Chain Turns a USB Plug Into SYSTEM: Details and PoC Now Public The post CVE-2026-5423: Authentication Bypass Hits Neo4j GraphQL Subscriptions appeared first on Daily CyberSecurity.