Redaxo CMS Mediapool Addon 5.5.1 Arbitrary File Upload
Published May 23, 2026
8.7
HIGHCVSS 4.0
EPSS 0.45%
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
-
- Version 0StatusaffectedConstraints<=5.5.1
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Redaxo | Redaxo CMS Mediapool | n/a |
|
No data.
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
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
1 other source (NVD) ▾
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:X/V:X/RE:X/U:X
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
No CVSS v3.0 score for this CVE.
No CVSS v2.0 score for this CVE.
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
PoCAutomatable
NoTechnical Impact
TotalDecision
n/aAssessed May 26, 2026 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
May–Oct 2026- EPSS v4
- EPSS v5
Percentile over time
- EPSS v4
- EPSS v5
Table of values (3 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.45% (0.00452) | 36.97th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.61% (0.00611) | 44.39th | v5 (v2026.06.15) |
| May 24, 2026 | 0.06% (0.00055) | 17.21th | v4 (v2025.03.14) |
References (4)
- https://redaxo.org product
- https://redaxo.org/download/redaxo/5.5.1.zip product
- https://www.exploit-db.com/exploits/44891 exploit
- https://www.vulncheck.com/advisories/redaxo-cms-mediapool-addon-arbitrary-file-upload third-party-advisory
| Link | Providers | Tags |
|---|---|---|
| https://redaxo.org | product | |
| https://redaxo.org/download/redaxo/5.5.1.zip | product | |
| https://www.exploit-db.com/exploits/44891 | exploit | |
| https://www.vulncheck.com/advisories/redaxo-cms-mediapool-addon-arbitrary-file-upload | third-party-advisory |
Change history (0)
No recorded changes yet.