npm vulnerability intelligence

flatted NPM Package
Vulnerability Check

A super light and fast circular JSON parser.

High severity ISC v3.4.2
Vulnerability Analysis OSV Live

flatted

v3.4.2 · ISC · 129,438,433 dl/wk

Advisory Breakdown

Critical 0
High 2
Moderate 0
Low 0

Severity Rating

High severity

2 advisories

High severity

Weekly downloads

129,438,433

Total advisories

2

Latest version

3.4.2

License

ISC

Advisories Package Info Runtime

Known advisories

OSV records for the npm ecosystem

2
GHSA-25h7-pfq9-p65f CVE-2026-32141 high

flatted vulnerable to unbounded recursion DoS in parse() revive phase

Affected: >=0 <3.4.0 Fixed in: 3.4.0 Updated Mar 17, 2026
View source
GHSA-rf6f-7fwh-wjgh CVE-2026-33228 high

Prototype Pollution via parse() in NodeJS flatted

Affected: >=0 <3.4.2 Fixed in: 3.4.2 Updated Mar 25, 2026
View source

Checked Jun 15, 2026, 11:43 AM from npm and OSV.dev

Package metadata

From the npm registry

Package name
flatted
Ecosystem
npm
Latest version
3.4.2
License
ISC
Weekly downloads
129,438,433
Repository
Open repository

Remediation boundary

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Data from npm registry and OSV.dev · Checked 6/15/2026, 11:43:24 AM