Dottor Marc

Dottor Marc is a security researcher credited with 6 disclosed vulnerabilities in the WordSec WordPress vulnerability database, ranked #696 of 3,823 contributors. The disclosure was published in 2026.

Their research concentrates on Cross-Site Scripting, which accounts for 2 of their findings (33%). Other recurring categories include Cross-Site Request Forgery (CSRF), Exposure Of Sensitive Information To An Unauthorized Actor. The average CVSS score across these disclosures is 7.3, peaking at 9.1. Severity breakdown: 1 critical and 3 high.

The most affected software includes Accept PayPal Payments using Contact… (1), BackupSheep WordPress Backup Plugin (1), Fast Courier (1), across 6 distinct plugins, themes and core versions in total.

3 of the 6 disclosed issues have a vendor fix, while 3 remain unpatched. The most severe finding, "BackupSheep <= 1.8 - Unauthenticated Arbitrary File Deletion", scores 9.1 out of 10.

2026
Critical
High
Medium
Low

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