CVE-2026-117551
Joomla Extension - jdownloads.com - RCE through file upload in jDownloads < 4.1.8
CVE-2026-117551 is a critical vulnerability (CVSS 10.0) in Dj-extensions.com Jdownloads Extension For Joomla, published November 12, 2026. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 0.44%, the 38th percentile. No source names a fixed version.
- Severity
- 10.0 CriticalCVSS 4.0, CVE List
- Exploit chance
- 0.44%EPSS, 38th percentile
- Exploitation
- None known1 public exploit
- Fixed in
- No fix listedNo source names one
- Discussion
- 0.9 SteadyBuzz score, 2 people today
Description
Joomla Extension - jdownloads.com - RCE through file upload in jDownloads < 4.1.8 - Insufficient validation of frontend thumbnail uploads allowed users with upload permission to place executable files on the server. This results in PHP code execution.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
Discussion
Affected products
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| PoC in GitHub | fixedbyreboot/CVE-2026-117551-POC | 2026-11-14 |
What each source reports
CVE List Score used
Joomla Extension - jdownloads.com - RCE through file upload in jDownloads < 4.1.8
Joomla Extension - jdownloads.com - RCE through file upload in jDownloads < 4.1.8 - Insufficient validation of frontend thumbnail uploads allowed users with upload permission to place executable files on the server. This results in PHP code execution.
- Record
CVE-2026-117551- CVSS 4.0
- 10.0 Critical
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:A/AU:Y - Weakness
- CWE-434
- Updated
- 2026-11-12
EUVDEUVD-2026-124608
Joomla Extension - jdownloads.com - RCE through file upload in jDownloads < 4.1.8 - Insufficient validation of frontend thumbnail uploads allowed users with upload permission to place executable files on the server. This results in PHP code execution.
- Record
EUVD-2026-124608- CVSS 4.0
- 10.0 Critical
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:A/AU:Y - Updated
- 2026-11-12
GitHub AdvisoriesGHSA-px9q-qw3v-wg6c
Joomla Extension - jdownloads.com - RCE through file upload in jDownloads < 4.1.8 - Insufficient...
Joomla Extension - jdownloads.com - RCE through file upload in jDownloads < 4.1.8 - Insufficient validation of frontend thumbnail uploads allowed users with upload permission to place executable files on the server. This results in PHP code execution.
- Record
GHSA-px9q-qw3v-wg6c- CVSS 4.0
- 10.0 Critical
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:A/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:Y/R:X/V:X/RE:X/U:X - Weakness
- CWE-434
- Updated
- 2026-11-12
NVD
Joomla Extension - jdownloads.com - RCE through file upload in jDownloads < 4.1.8 - Insufficient validation of frontend thumbnail uploads allowed users with upload permission to place executable files on the server. This results in PHP code execution.
- Record
CVE-2026-117551- CVSS 4.0
- 10.0 Critical
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:A/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:Y/R:X/V:X/RE:X/U:X - Weakness
- CWE-434
- Updated
- 2026-11-12
History
| Recorded | Changed | Sources |
|---|---|---|
| exploits, facts | PoC in GitHub | |
| published | EUVD | |
| aliases, products | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.