CVE-2018-25353

Redaxo CMS Mediapool Addon 5.5.1 and older contains an arbitrary file upload vulnerability that allows authenticated users to bypass file extension blacklist restrictions. Attackers with editor accounts can upload executable files by using obfuscated extensions like php71 or php53 to evade the blacklist filter and execute arbitrary code.

CVSS v4.0

8.7 HIGHCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CVSS v3.1

8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS

0.45% chance of exploitation in the next 30 days, 38th percentile

Published

2026-05-23

Updated

2026-05-26

Proof-of-concept exploits (1)

• https://www.exploit-db.com/exploits/44891

References

• CVE Record
• NVD entry

Related

• CVE-2018-25352
• CVE-2018-25354
• CVE-2018-25351
• CVE-2018-25355
• CVE-2018-25350
• CVE-2018-25356