EUVD-2026-11653
GHSA-25h7-pfq9-p65f
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Primary rating from Vendor (github).
CVSS VectorVendor: github
Lifecycle Timeline
4Blast Radius
ecosystem impact- 5 npm packages depend on flatted (2 direct, 3 indirect)
Ecosystem-wide dependent count for version 3.4.0.
DescriptionCVE.org
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.
AnalysisAI
flatted is a circular JSON parser. versions up to 3.4.0 is affected by uncontrolled recursion (CVSS 7.5).
Technical ContextAI
This vulnerability (CWE-674: Uncontrolled Recursion) affects flatted is a circular JSON parser.. 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.
RemediationAI
Fixed in version 3.4.0.. Restrict network access to the affected service where possible.
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Same weakness CWE-674 – Uncontrolled Recursion
View allSame technique Denial Of Service
View allVendor StatusVendor
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External POC / Exploit Code
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