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OpenAdvisories
High · 8.8 CVE-2018-25353 EUVD-2018-21876GHSA-x5jj-8qq8-g67q

Redaxo CMS Mediapool Addon 5.5.1 Arbitrary File Upload

Published May 23, 2026 · Updated May 26, 2026 · Assigned by VulnCheck

Description

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.

Affected products

VendorProductAffectedFixed
Redaxo Redaxo CMS Mediapool ≤ 5.5.1 —

References