What’s Vulnerable › Vulnerabilities

CVE-2018-25353: Redaxo CMS Mediapool Addon 5.5.1 Arbitrary File Upload

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-05-23 · updated 2026-07-23
• Weakness: CWE-863

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

• Redaxo CMS Mediapool: through 5.5.1

References

• https://redaxo.org
• https://redaxo.org/download/redaxo/5.5.1.zip
• https://www.exploit-db.com/exploits/44891
• https://www.vulncheck.com/advisories/redaxo-cms-mediapool-addon-arbitrary-file-upload

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