CVE-2026-61900
The Joomla extension JDownloads (versions earlier than 4.1.6) allows anyone on the internet to upload arbitrary files without authentication. An attacker can then execute those files, giving them full control over the affected website.
No official fix yet. If none appears within 45 days of first tracking, this entry is removed automatically.
Who is affected
Websites running Joomla that have the JDownloads extension installed in a version older than 4.1.6.
Real-world impact
An attacker can upload malicious code and run it on the server, effectively taking over the site, stealing data, or using it for further attacks.
Why this severity
The CVSS score of 10 reflects that the vulnerability requires no authentication, allows remote code execution, and compromises confidentiality, integrity, and availability of the entire system.
What to do about it
- ›Disable or remove the JDownloads extension until a patched version is released.
No official fix or mitigation is documented in the sources yet. Monitor the vendor advisory and apply the patch as soon as it is released.
No fix documented in sources
Timeline
- Jul 20, 2026 · 13d agoPublishedDisclosed and added to the National Vulnerability Database.
- Jul 23, 2026 · 10d agoAdvisory updatedThe NVD record was last revised.