/Vulnerability Library

RSFiles! for Joomla - Arbitrary File Upload

CVE-2026-57827
Verified

Description

RSFiles! (com_rsfiles) for Joomla < 1.17.12 allows unauthenticated arbitrary file upload via the rsfiles.upload task. The write method performs no authentication, CSRF token, or file extension checks, allowing upload of executable PHP files to the web-accessible downloads/ directory.

Severity

Critical

CVSS Score

9.8

Exploit Probability

2%

Affected Product

rsfiles

Published Date

August 7, 2026

Template Author

omarkurt

CVE-2026-57827.yaml
9.8Score

CVSS Metrics

CVSS Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVE ID:
cve-2026-57827
CWE ID:
cwe-434

References

https://mysites.guru/blog/rsfiles-unauthenticated-file-upload-rce/https://vulnerabletarget.com/VT-2026-57827https://www.rsjoomla.com/blog/view/644-unauthenticated-file-upload-fixed-in-rsfiles-version-11712-update-now.htmlhttps://nvd.nist.gov/vuln/detail/CVE-2026-57827

Remediation Steps

Update RSFiles! to version 1.17.12 or later.