CVE-2026-32141
flatted: Unbounded recursion DoS in parse() revive phase
CVSS Score
7.5
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-674 |
| Vendor | webreflection |
| Product | flatted |
| Published | Mar 12, 2026 |
| Last Updated | Mar 13, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Affected Versions
WebReflection / flatted
< 3.4.0