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Vulnerability record · CVE-2018-25353 · published 23 May 2026

CVE-2018-25353: Incorrect authorization vulnerability

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.

8.7 CVSS 4.0 High EPSS 0.45% · top 63.2% CWE-863 · Incorrect authorization Deferred
8.7CVSS 4.0 base score
0.45%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
4References
23 Jul 2026Last modified by NVD

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.

CVSS: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:

References

LinkTags
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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Source: NIST National Vulnerability Database (record CVE-2018-25353), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.