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cve.nowby Sazabi
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flatted

2 known vulnerabilities (2 high), with the versions each affects and the releases that fix them.

Latest release
3.4.4 (Jul 30, 2026): no advisory affects it
Newest unaffected release
3.4.4 (Jul 30, 2026), the latest release
Advisories
2 · 2 high
Weekly downloads
199.4M
Dependents
84.7K
Releases
44 since 0.1.0 (Apr 26, 2018)
Registry
npm
Releases read
Nov 8, 2026

Version timeline

Every release cve.now has on record, lowest version on the left; each bar is a run of versions an advisory affects.

Advisories 2

  • flatted: Prototype Pollution via parse()

    Affected: fixed in 3.4.2.

    Fixed in 3.4.2 (released Mar 17, 2026, 3 days before disclosure).

    The latest release, 3.4.4, is not affected.

    28% of flatted downloads last week were affected versions (63.4M).

  • flatted: Unbounded recursion DoS in parse() revive phase

    Affected: fixed in 3.4.0.

    Fixed in 3.4.0 (released Mar 8, 2026, 4 days before disclosure).

    The latest release, 3.4.4, is not affected.

    28% of flatted downloads last week were affected versions (61.8M).