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Vulnerability · Published Dec 25, 2022 · Assigned by VulDB

CVE-2020-36632hughsk flat index.js unflatten prototype pollution

Medium 6.3

In plain English

A medium-severity prototype pollution in flat from hughsk. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.2% (higher than 68% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)6.3Medium
Exploit odds (30 days)1.2%top 31.7% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Ubuntu:22.04:LTSqt6-webengineno fix listedUBUNTU-CVE-2020-36632
Ubuntu:24.04:LTSqt6-webengineno fix listedUBUNTU-CVE-2020-36632
Ubuntu:25.10qt6-webengineno fix listedUBUNTU-CVE-2020-36632
Ubuntu:26.04:LTSqt6-webengineno fix listedUBUNTU-CVE-2020-36632
Ubuntu:26.10qt6-webengineno fix listedUBUNTU-CVE-2020-36632
npmflat5.0.1GHSA-2j2x-2gpw-g8fm
npmflat4.0.2GHSA-2j2x-2gpw-g8fm
npmflat3.0.1GHSA-2j2x-2gpw-g8fm
npmflat2.0.2GHSA-2j2x-2gpw-g8fm
npmflat1.6.2GHSA-2j2x-2gpw-g8fm

Affected products (as reported)

VendorProductVersions
hughsk flat 5.0

Weakness: CWE-1321 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

References