CVE-2020-7699: express-fileupload_project express-fileupload Prototype Pollution

Vulnerability summary

CVE-2020-7699 is a critical (CVSS 9.8) Prototype Pollution vulnerability in express-fileupload_project express-fileupload. EPSS estimates a 4.76% chance of exploitation in the next 30 days, higher than 91.8% of scored vulnerabilities. 2 public exploits are recorded.

Timeline

1. 30-07-2020
   PublishedVulnerability first disclosed.
2. 17-09-2024
   Last modifiedVulnerability information updated.

Description

This affects the package express-fileupload before 1.1.8. If the parseNested option is enabled, sending a corrupt HTTP request can lead to denial of service or arbitrary code execution.

• CWE-1321Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')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.