Skip to main content
mySites.guru
Free Audit
J!Awards 2026mySites.guru is shortlisted for Your Favourite Tool in Your Joomla WorkflowVote by 11 OctoberHow to vote
CVE-2026-61424CriticalCVSS 10.0CVE published 20 July 2026Added to mySites.guru 20 July 2026

DJ-Classifieds (com_djclassifieds) below 3.11.2 - Unauthenticated Arbitrary File Upload

DJ-Classifieds by DJ-Extensions, all versions before 3.11.2, exposes a front-end file upload endpoint (task=imageupload) that requires no login and validates no CSRF token. An anonymous visitor can write an attacker-named file into the component upload directory, which on a default install is served over the web. Several mitigations were already present in older builds and do reduce the impact: an extension blacklist rejects .php, .phtml, .sh and .js, uploaded content is scanned for patterns such as "<?php", "eval(" and "base64", image extensions are validated with getimagesize(), and temporary files are cleaned up after roughly 12 hours. The content scan only matches the literal "<?php" opening tag, so a short-tag payload ("<?=") survives it, which leaves a polyglot image webshell stored intact and executable on permissive hosts or through a local file inclusion chain. Version 3.11.2 (released 20 July 2026) adds authentication and CSRF/session checks to the imageupload endpoint and enforces a server-side image-only whitelist. Update to 3.11.2 or later. If you cannot update immediately, block POST requests to index.php?option=com_djclassifieds&task=imageupload at the web server or WAF, and check the component upload directory for files you do not recognise. This range also covers the earlier authenticated SQL injection fixed in 3.10.2 (CVE-2025-54474).

Is my site affected?

Affected
DJ-Classifieds before 3.11.2
Fixed in
3.11.2
What to do
Update DJ-Classifieds to 3.11.2 or later.
Check whether your sites are affected

How CVE-2026-61424 is scored

The base metrics as Joomla CNA published them, and what each one means for a site running an affected version. Threat and environmental metrics are left out: they describe a moment or a particular install rather than the flaw.

10.0 Critical

CVSS 4.0, scored by Joomla CNA
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

How it is reached

AV:N Attack vector
Network. Reachable across the internet
AC:L Attack complexity
Low. Nothing to work around, it just works
AT:N Attack requirements
None. Works against any affected install
PR:N Privileges required
None. No account needed
UI:N User interaction
None. Nobody has to be tricked into anything

What it does to the site

VC:H Confidentiality
High. Everything the site holds can be read
VI:H Integrity
High. Data and files can be altered at will
VA:H Availability
High. The site can be taken down

What it does beyond the site

SC:H Confidentiality
High. Data on other systems can be read
SI:H Integrity
High. Other systems can be altered
SA:H Availability
High. Other systems can be taken down

Timeline

  1. 20 July 2026CVE-2026-61424 record published by its CNA
  2. 20 July 2026mySites.guru check added for DJ-Classifieds (before 3.11.2)

Rule details

Other vulnerabilities in DJ-Classifieds

Updating for CVE-2026-61424 alone can leave a site on a release another rule still matches. These are the other flaws we check for in the same extension.

DJ-Classifieds

Latest safe version: 3.11.2

References

CVE-2026-61424 questions

Which versions are affected by CVE-2026-61424?
CVE-2026-61424 affects DJ-Classifieds before 3.11.2. The fix is in 3.11.2.
How do I fix CVE-2026-61424?
Update DJ-Classifieds to 3.11.2 or later. Then confirm the installed version on the Joomla administrator's Extensions: Manage screen.
How severe is CVE-2026-61424?
Joomla CNA scores it 10.0 (Critical) under CVSS 4.0. In plain terms: reachable across the internet, no account needed and nobody has to be tricked into anything.

Running an affected version on a site you manage?

A free audit tells you which of your Joomla and WordPress sites run an affected version, which are out of date, and which have not been backed up. No card required. If a site is already compromised, fix.mysites.guru is a single fixed fee per incident, usually resolved the same day.

This check is part of the mySites.guru Joomla vulnerability scanner, which reads every installed extension's version on each audit. Browse the rest of the Joomla vulnerability database.

Rules current as of 5 October 2026.