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Rsfiles\!Application · Rsjoomla

CVE-2026-57827

CRITICAL · 9.8 CVSS v3.1 Published 2026-07-11
Fix available
A fix is available. Upgrade to 1.17.12 or later.
See remediation →
100/100
Remediation priority · Urgent
Remotely reachable No privileges Zero-click 6 weeks old

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
Joomla Extension - rsjoomla.com - Unauthenticated file upload in RSFiles component < 1.17.12 - The Joomla extension RSFiles is vulnerable to an unauthenticated arbitrary file upload that allows uploading executable files and leads to full RCE.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · high confidence

The RSFiles component for Joomla versions before 1.17.12 contains an unauthenticated arbitrary file upload vulnerability that allows remote attackers to upload executable files directly to the server, leading to complete remote code execution and full system compromise.

MitigationUpdate RSFiles component to version 1.17.12 or later. If immediate patching is not possible, disable the RSFiles extension or implement web application firewall rules to block unauthorized file upload requests.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
Rsfiles\!Application
Affected:< 1.17.12

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Confirm RSFiles component is installed
    Check Joomla extension manager or inspect the #__extensions database table for component named 'com_rsfiles' or 'RSFiles'
    Affected if RSFiles component exists in Joomla extensions
  2. Determine installed RSFiles version
    Query the #__extensions table for the manifest_cache column containing 'com_rsfiles', or check the component's manifest XML file in /administrator/components/com_rsfiles/ for the version tag
    Affected if Version field shows a number lower than 1.17.12 (e.g., 1.17.11, 1.17.10, etc.)
  3. Verify file upload functionality is accessible
    Inspect RSFiles component configuration in Joomla admin under Components > RSFiles > Options, or examine the component's configuration XML for upload-related parameters
    Affected if Upload functionality is enabled and the upload endpoint is accessible without authentication requirements

Your environment is affected if RSFiles component is installed with a version lower than 1.17.12 and the file upload feature is enabled and exposed to unauthenticated users

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

From vendor data
Upgrade available Upgrade to 1.17.12 or later
Fixed in 1.17.12
Interim mitigation

Update RSFiles component to version 1.17.12 or later. If immediate patching is not possible, disable the RSFiles extension or implement web application firewall rules to block unauthorized file upload requests.

Fix this in Rsfiles\! Scoped from the published advisory
  • Consultation2.0 h
  • Implementation2.0 h
  • Testing3.0 h
  • Review / QA1.0 h
8.0 hours of engineering $1,390
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $2,224.

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2026-57827 in production — separate from our analysis above.

No notes yet

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data