Detections
Analytics
CVE-2026-32141
high
Description
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.
References
https://github.com/WebReflection/flatted/security/advisories/GHSA-25h7-pfq9-p65f
https://github.com/WebReflection/flatted/pull/88
https://github.com/WebReflection/flatted/commit/7eb65d857e1a40de11c47461cdbc8541449f0606