Rein Daelman (trein)
Rein Daelman (trein) is a security researcher credited with 9 disclosed vulnerabilities in the WordSec WordPress vulnerability database, ranked #479 of 3,515 contributors. Their disclosures were published between 2023 and 2025. The most productive year was 2024, with 5 findings.
Their research concentrates on Cross-Site Scripting, which accounts for 4 of their findings (44%). Other recurring categories include Unrestricted Upload Of File With Dangerous Type, Authorization Bypass Through User-Controlled Key. The average CVSS score across these disclosures is 6.7, peaking at 9.8. Severity breakdown: 1 critical and 2 high.
The most affected software includes Backup and Staging by WP Time Capsule (1), Booking calendar (1), Business Directory Plugin (1), across 9 distinct plugins, themes and core versions in total.
All 9 disclosed issues have since received a vendor fix. The most severe finding, "Backup and Staging by WP Time Capsule <= 1.22.21 - Unauthenticated Arbitrary File Upload", scores 9.8 out of 10.
#479
of 3,515 researchers
9
9
6.7
Average score of vulnerabilities
Researcher Submissions
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