Medium severity6.3NVD Advisory· Published Dec 25, 2022· Updated Jun 17, 2026
CVE-2020-36632
CVE-2020-36632
Description
A vulnerability, which was classified as critical, was found in hughsk flat up to 5.0.0. This affects the function unflatten of the file index.js. The manipulation leads to improperly controlled modification of object prototype attributes ('prototype pollution'). It is possible to initiate the attack remotely. Upgrading to version 5.0.1 is able to address this issue. The name of the patch is 20ef0ef55dfa028caddaedbcb33efbdb04d18e13. It is recommended to upgrade the affected component. The identifier VDB-216777 was assigned to this vulnerability.
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LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
flatnpm | < 1.6.2 | 1.6.2 |
flatnpm | >= 2.0.0, < 2.0.2 | 2.0.2 |
flatnpm | >= 3.0.0, < 3.0.1 | 3.0.1 |
flatnpm | >= 4.0.0, < 4.0.2 | 4.0.2 |
flatnpm | >= 5.0.0, < 5.0.1 | 5.0.1 |
Affected products
3- hughsk/flatv5Range: 5.0
Patches
Vulnerability mechanics
References
12- github.com/hughsk/flat/commit/20ef0ef55dfa028caddaedbcb33efbdb04d18e13nvdPatchThird Party AdvisoryWEB
- github.com/hughsk/flat/pull/106nvdPatchThird Party AdvisoryWEB
- github.com/advisories/GHSA-2j2x-2gpw-g8fmghsaADVISORY
- github.com/hughsk/flat/issues/105nvdIssue TrackingThird Party AdvisoryWEB
- github.com/hughsk/flat/releases/tag/5.0.1nvdRelease NotesThird Party AdvisoryWEB
- nvd.nist.gov/vuln/detail/CVE-2020-36632ghsaADVISORY
- vuldb.comnvdThird Party AdvisoryWEB
- vuldb.comnvdThird Party AdvisoryWEB
- github.com/hughsk/flat/compare/3.0.0...3.0.1ghsaWEB
- github.com/hughsk/flat/compare/4.1.0...4.1.1ghsaWEB
- github.com/hughsk/flat/compare/v1.6.0...1.6.2ghsaWEB
- github.com/hughsk/flat/compare/v2.0.1...2.0.2ghsaWEB
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