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Cache Cleaner security vulnerabilities

mySites.guru tracks 1 vulnerability in Cache Cleaner (cachecleaner), covering 4 CVEs. Every connected Joomla site is checked against it on each audit.

Is my site affected?

Your site is affected if it runs Cache Cleaner in this range:

  • before 10.0.0
Latest safe version
10.0.0 or later. No rule we check matches that release or any newer one.
What to do
Update Cache Cleaner to 10.0.0 or later from the vendor, then confirm the installed version on the Joomla administrator's Extensions: Manage screen.
Check whether your sites are affected

Every Cache Cleaner vulnerability we track

Newest first. CVSS is the score published in each CVE record, where it has one; the severity column is the rating our check uses.

CVEAffected versionsFixed inSeverityAdded
CVE-2026-64871CVSS 5.4CVE-2026-64872CVSS 6.5CVE-2026-64873CVSS 9.8CVE-2026-64874CVSS 9.8before 10.0.010.0.0Unrated-

What we check for

CVE-2026-64871CVE-2026-64872CVE-2026-64873CVE-2026-64874

Cache Cleaner (cachecleaner) below 10.0.0 - Authenticated SSRF, OS Command Injection and Path Traversal

Regular Labs Cache Cleaner before 10.0.0 is affected by several issues fixed in the coordinated Regular Labs security release of 22 July 2026 (no CVE assigned): custom query URLs able to reach private or reserved network services (SSRF); SiteGround cache purging that let request host values reach a shell command (OS command injection); custom folder and log paths accepting unsafe relative paths (path traversal); CDN provider credentials exposed in administrator request URLs; and administrator URL purges not requiring a valid token and cache-manage permission. Exploitation is largely from configured/administrator context, but the SSRF and command-injection paths are the notable ones. Update to Cache Cleaner 10.0.0 or later. CVE ids assigned by the Joomla CNA for this extension in the 22 July 2026 Regular Labs security release: CVE-2026-64871, CVE-2026-64872, CVE-2026-64873.

Affected versions: < 10.0.0

Full advisory: regularlabs.com

Timeline

  1. 23 July 2026CVE-2026-64871 record published
  2. 23 July 2026CVE-2026-64872 record published
  3. 23 July 2026CVE-2026-64873 record published
  4. 23 July 2026CVE-2026-64874 record published

References

Each CVE page above links its official cve.org record and its NVD entry.

Cache Cleaner vulnerability questions

Which versions of Cache Cleaner are vulnerable?
mySites.guru tracks one vulnerability in Cache Cleaner (cachecleaner). A site is affected if its installed version is in this range: before 10.0.0.
What is the latest safe version of Cache Cleaner?
10.0.0. Every vulnerability tracked here is fixed by 10.0.0, and no rule we check matches that release or any later one.
How do I check which version of Cache Cleaner my Joomla site runs?
The installed version is listed on the Joomla administrator's Extensions: Manage screen; search it for cachecleaner. mySites.guru reads the installed version on every audit of a connected site and checks it against this rule.

Running Cache Cleaner 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.

CVE identifiers: CVE-2026-64871, CVE-2026-64872, CVE-2026-64873, CVE-2026-64874. Rules current as of 13 October 2026.