Vulnerability Details CVE-2026-32141
flatted is a circular JSON parser. Prior to 3.4.0, flatted's parse() function uses a recursive revive() phase to resolve circular references in deserialized JSON. When given a crafted payload with deeply nested or self-referential $ indices, the recursion depth is unbounded, causing a stack overflow that crashes the Node.js process. This vulnerability is fixed in 3.4.0.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 15.1%
CVSS Severity
CVSS v3 Score 7.5
References