CVE-2018-20129: Dedecms

High severity, CVSS 8.8. EPSS: 8.2% chance of exploitation in the next 30 days.

An issue was discovered in DedeCMS V5.7 SP2. uploads/include/dialog/select_images_post.php allows remote attackers to upload and execute arbitrary PHP code via a double extension and a modified ".php" substring, in conjunction with the image/jpeg content type, as demonstrated by the filename=1.jpg.p*hp value.

Affected products

• Dedecms Dedecms: version 5.7 only

Published 2018-12-13. Last modified 2026-06-17.