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.
The product receives input from an upstream component that specifies attributes that are to be initialized or updated in an object, but it does not properly control modifications of attributes of the object prototype.
| Link | Tags |
|---|---|
| https://vuldb.com/?id.216777 | vdb entry third party advisory technical description |
| https://vuldb.com/?ctiid.216777 | third party advisory permissions required signature |
| https://github.com/hughsk/flat/issues/105 | issue tracking third party advisory |
| https://github.com/hughsk/flat/pull/106 | issue tracking third party advisory patch |
| https://github.com/hughsk/flat/commit/20ef0ef55dfa028caddaedbcb33efbdb04d18e13 | third party advisory patch |
| https://github.com/hughsk/flat/releases/tag/5.0.1 | release notes third party advisory patch |