CVE-2017-5215: Codextrous b2j Contact

Critical severity, CVSS 9.8. EPSS: 3.6% chance of exploitation in the next 30 days.

The Codextrous B2J Contact (aka b2j_contact) extension before 2.1.13 for Joomla! allows a rename attack that bypasses a "safe file extension" protection mechanism, leading to remote code execution.

Affected products

• Codextrous b2j Contact: up to and including 2.1.12

Published 2017-05-17. Last modified 2026-06-17.