CVE-2026-88406

High severity, CVSS 7.5. EPSS: 0.5% chance of exploitation in the next 30 days.

FalkorDB (Redis module) v4.20.1 to v4.20.4 was discovered to contain a stack overflow in the _ValidateUnion_Clauses function (/ast/ast_validations.c). This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted input.

Published 2026-09-21. Last modified 2026-09-22.