Leo

Leo is a security researcher credited with 5 disclosed vulnerabilities in the WordSec WordPress vulnerability database, ranked #733 of 3,515 contributors. The disclosure was published in 2024.

Their research concentrates on Deserialization Of Untrusted Data, which accounts for 2 of their findings (40%). Other recurring categories include Cross-Site Scripting, Missing Authorization. The average CVSS score across these disclosures is 7.4, peaking at 9.8. Severity breakdown: 1 critical and 2 high.

The most affected software includes Rank Math SEO (2), Code Embed (1), FluentSMTP (1), across 4 distinct plugins, themes and core versions in total.

All 5 disclosed issues have since received a vendor fix. The most severe finding, "FluentSMTP – WP SMTP Plugin with Amazon SES, SendGrid, MailGun, Postmark, Google and Any SMTP Provider <= 2.2.82 - Unauthenticated PHP Object Injection", scores 9.8 out of 10.