Joost de Valk

Joost de Valk is a security researcher credited with 4 disclosed vulnerabilities in the WordSec WordPress vulnerability database, ranked #868 of 3,515 contributors. The disclosure was published in 2015.

Their research concentrates on Cross-Site Scripting, which accounts for 3 of their findings (75%). Other recurring categories include Path Traversal. The average CVSS score across these disclosures is 7.0, peaking at 9.8. Severity breakdown: 1 critical and 0 high.

The most affected software includes BuilderChild-Depot (1), Exchange Addon Invoices (1), exchange-addon-table-rate-shipping (1), across 4 distinct plugins, themes and core versions in total.

All 4 disclosed issues have since received a vendor fix. The most severe finding, "My Calendar <= 2.3.29 - Path Traversal to Remote Code Execution", scores 9.8 out of 10.