CVE-2018-20151: Debian Linux

High severity, CVSS 7.5. EPSS: 5.8% chance of exploitation in the next 30 days.

In WordPress before 4.9.9 and 5.x before 5.0.1, the user-activation page could be read by a search engine's web crawler if an unusual configuration were chosen. The search engine could then index and display a user's e-mail address and (rarely) the password that was generated by default.

Affected products

• Debian Debian Linux: version 8.0 only; version 9.0 only
• WordPress WordPress: before 4.9.9 (fixed in 4.9.9); from 5.0, before 5.0.1 (fixed in 5.0.1)

Published 2018-12-14. Last modified 2026-06-17.