CVE-2026-71574

Joomla! Core - [20260803] - Inconsistent ACL checks for mutating webservice endpoints in Joomla 4.0.0-5.4.7, 6.0.0-6.1.2

Joomla! Core - [20260803] - Inconsistent ACL checks for mutating webservice endpoints in Joomla 4.0.0-5.4.7, 6.0.0-6.1.2 - An improper access check allows unauthorized users to perform mutation actions in webservice endpoints, where the same mutation was restricted in the backend UI.

We have discovered 1,821 live websites that are affected by CVE-2026-71574.

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Affected Software

Product  Joomla
Category Content Management System
Vulnerable Domains1,821 live websites (1.36% of Joomla install base)
Vulnerable Versions
  • from 4 through 5
  • from 5 through 5.4.7
  • from 6 through 6.1.3
Vulnerable Versions Count27 versions ( 21% of all versions)


Common Weakness Enumeration

CWE-284 Improper Access Control



Details

  • Published - Aug 18, 2026
  • Updated - Aug 21, 2026

Credits

  • Paul (finder)
  • Sorrachat (finder)
  • tms (finder)
  • Morris Baumgarten-Egemole (finder)

Website Distribution by Country

Number of websites using CVE-2026-71574
United States180 websites


Germany511 websites
France188 websites
Switzerland122 websites
Netherlands111 websites
Russia106 websites
Italy89 websites
Austria58 websites
GB53 websites
Spain28 websites

Website Distribution by TLD

Number of websites using CVE-2026-71574
.de440 websites
.com268 websites
.ch111 websites
.fr105 websites
.nl100 websites
.ru91 websites
.org87 websites
.it59 websites
.at57 websites
.net57 websites

Vulnerable Versions

Vulnerable versions are highlighted in red

Websites affected by CVE-2026-71574

Top websites that are affected by CVE-2026-71574. Please click on the "Contact us" link to get more information.
DomainCountryRankContacts
******.fr Canada**,***
************.ru Russia**,***
******.**.il Israel**,***
**.******.org United States**,***
**************.com France***,***
*****************.eu Germany***,***
********.org Italy***,***
********.de Germany***,***
****************.at Austria***,***
*********.de Germany***,***
See full domain list

FAQ

CVE-2026-71574 is Improper Access Control in Joomla
A total of 1,821 websites have been identified as vulnerable to CVE-2026-71574, based on global website indexing conducted by WebTechSurvey.
The Joomla is affected by the CVE-2026-71574 vulnerability.
Joomla versions up to 6.1.3 are vulnerable to CVE-2026-71574.
CVE-2026-71574 is resolved in version 6.1.3 of Joomla.