CVE-2026-57827
CWE-434Published: July 11, 2026· Updated: Jul 14, 2026
Official Description
The Joomla extension RSFiles is vulnerable to an unauthenticated arbitrary file upload that allows uploading executable files and leads to full RCE.
Risk Analysis
This critical vulnerability in the Joomla extension RSFiles permits unauthenticated arbitrary file uploads, enabling attackers to upload executable files and achieve full remote code execution. With a perfect CVSS score of 10.0, this flaw is extremely urgent.
An exploit for this vulnerability is known to exist. It is remotely exploitable and does not require any authentication, making it a severe and immediate threat.
Update the RSFiles extension for Joomla to a patched version immediately. Implement strict file type and content validation for all uploads, and restrict upload directories to prevent execution of uploaded files.
Technical Analysis
CVE-2026-57827 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.
A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.
CVSS v3.1 Vector Breakdown
Affected Vendors & Products
Exploit & PoC Resources
Official Patches & Advisories
All References (2)
Quick Facts
Related CVEs (CWE-434)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2026-57827 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts