Joomla! Community Saudi Arabia

Security Announcements

• [20260712] - Core - Incorrect Access Control in com_fields webservice endpoints

  • Project: Joomla!
  • SubProject: CMS
  • Impact: Moderate
  • Severity: Moderate
  • Probability: Low
  • Versions: 4.0.0-5.4.6, 6.0.0-6.1.1
  • Exploit type: Incorrect Access Control
  • Reported Date: 2026-05-05
  • Fixed Date: 2026-07-07
  • CVE Number: CVE-2026-48958

  Description

  An improper access check allows unauthorized users to create custom fields via webservices endpoints.

  Affected Installs

  Joomla! CMS versions 4.0.0-5.4.6, 6.0.0-6.0.0-6.1.1

  Solution

  Upgrade to version 5.4.7, 6.1.2

  Contact

  The JSST at the Joomla! Security Centre.

  Reported By:  Federico Brasili

• [20260711] - Core - Incorrect Access Control in com_privacy webservice endpoints

  • Project: Joomla!
  • SubProject: CMS
  • Impact: Low
  • Severity: Moderate
  • Probability: Low
  • Versions: 4.0.0-5.4.6, 6.0.0-6.1.1
  • Exploit type: Incorrect Access Control
  • Reported Date: 2026-06-12
  • Fixed Date: 2026-07-07
  • CVE Number: CVE-2026-48957

  Description

  An improper access check allows unauthorized users to access com_privacy datasets.

  Affected Installs

  Joomla! CMS versions 4.0.0-5.4.6, 6.0.0-6.0.0-6.1.1

  Solution

  Upgrade to version 5.4.7, 6.1.2

  Contact

  The JSST at the Joomla! Security Centre.

  Reported By:  Himanshu Anand

• [20260710] - Core - Incorrect Access Control in com_modules

  • Project: Joomla!
  • SubProject: CMS
  • Impact: Moderate
  • Severity: Moderate
  • Probability: Low
  • Versions: 4.0.0-5.4.6, 6.0.0-6.1.1
  • Exploit type: Incorrect Access Control
  • Reported Date: 2026-05-22
  • Fixed Date: 2026-07-07
  • CVE Number: CVE-2026-48956

  Description

  An improper access check allows users to display a list of modules in the frontend.

  Affected Installs

  Joomla! CMS versions 4.0.0-5.4.6, 6.0.0-6.0.0-6.1.1

  Solution

  Upgrade to version 5.4.7, 6.1.2

  Contact

  The JSST at the Joomla! Security Centre.

  Reported By:  Warisjeet Singh (sin99xx)

• [20260709] - Core - Incorrect Access Control in com_workflow

  • Project: Joomla!
  • SubProject: CMS
  • Impact: Moderate
  • Severity: Moderate
  • Probability: Low
  • Versions: 6.0.0-6.1.1
  • Exploit type: Incorrect Access Control
  • Reported Date: 2026-04-22
  • Fixed Date: 2026-07-07
  • CVE Number: CVE-2026-48955

  Description

  An improper access check allows unauthorized users to access workflow stage and transition information.

  Affected Installs

  Joomla! CMS versions 6.0.0-6.1.1

  Solution

  Upgrade to version 6.1.2

  Contact

  The JSST at the Joomla! Security Centre.

  Reported By:  廖双

• [20260708] - Core - XSS through language overrides

  • Project: Joomla!
  • SubProject: CMS
  • Impact: Moderate
  • Severity: Moderate
  • Probability: Low
  • Versions: 3.0.0-5.4.6,6.0.0-6.1.1
  • Exploit type: XSS
  • Reported Date: 2026-05-15
  • Fixed Date: 2026-07-07
  • CVE Number: CVE-2026-48954

  Description

  Improper validation leads to a generic XSS vector in the language override feature.

  Affected Installs

  Joomla! CMS versions 3.0.0-5.4.5,6.0.0-6.1.1

  Solution

  Upgrade to version 5.4.7, 6.1.2

  Contact

  The JSST at the Joomla! Security Centre.

  Reported By:  Morris Baumgarten-Egemole

• [20260707] - Core - XSS in the generic image output layout

  • Project: Joomla!
  • SubProject: CMS
  • Impact: Moderate
  • Severity: Moderate
  • Probability: Low
  • Versions: 4.0.0-5.4.6,6.0.0-6.1.1
  • Exploit type: XSS
  • Reported Date: 2026-05-15
  • Fixed Date: 2026-07-07
  • CVE Number: CVE-2026-48953

  Description

  Lack of escaping leads to an XSS vulnerability in the generic image output layout.

  Affected Installs

  Joomla! CMS versions 4.0.0-5.4.5,6.0.0-6.1.1

  Solution

  Upgrade to version 5.4.7, 6.1.2

  Contact

  The JSST at the Joomla! Security Centre.

  Reported By:  Pavel Kohout, Aisle Research

• [20260706] - Core - XSS in com_installer

  • Project: Joomla!
  • SubProject: CMS
  • Impact: Moderate
  • Severity: Moderate
  • Probability: Low
  • Versions: 4.0.0-5.4.6,6.0.0-6.1.1
  • Exploit type: XSS
  • Reported Date: 2026-05-21
  • Fixed Date: 2026-07-07
  • CVE Number: CVE-2026-48952

  Description

  Lack of escaping leads to an XSS vulnerability in the update list view of com_installer.

  Affected Installs

  Joomla! CMS versions 4.0.0-5.4.5,6.0.0-6.1.1

  Solution

  Upgrade to version 5.4.7, 6.1.2

  Contact

  The JSST at the Joomla! Security Centre.

  Reported By:  廖双

• [20260705] - Core - XSS in various modalreturn layouts

  • Project: Joomla!
  • SubProject: CMS
  • Impact: Moderate
  • Severity: Moderate
  • Probability: Low
  • Versions: 4.0.0-5.4.6,6.0.0-6.1.1
  • Exploit type: XSS
  • Reported Date: 2026-05-07
  • Fixed Date: 2026-07-07
  • CVE Number: CVE-2026-48951

  Description

  Lack of escaping leads to XSS vulnerabilities in modalreturn layouts of various components.

  Affected Installs

  Joomla! CMS versions 4.0.0-5.4.5,6.0.0-6.1.1

  Solution

  Upgrade to version 5.4.7, 6.1.2

  Contact

  The JSST at the Joomla! Security Centre.

  Reported By:  Jorian Woltjer

• [20260704] - Core - XSS in com_templates

  • Project: Joomla!
  • SubProject: CMS
  • Impact: Moderate
  • Severity: Moderate
  • Probability: Low
  • Versions: 4.0.0-5.4.6,6.0.0-6.1.1
  • Exploit type: XSS
  • Reported Date: 2026-05-07
  • Fixed Date: 2026-07-07
  • CVE Number: CVE-2026-48950

  Description

  Lack of escaping leads to an XSS vulnerability in the file management view of com_templates.

  Affected Installs

  Joomla! CMS versions 4.0.0-5.4.5,6.0.0-6.1.1

  Solution

  Upgrade to version 5.4.7, 6.1.2

  Contact

  The JSST at the Joomla! Security Centre.

  Reported By:  Jorian Woltjer

• [20260703] - Core - XSS in MFA method management

  • Project: Joomla!
  • SubProject: CMS
  • Impact: Moderate
  • Severity: Moderate
  • Probability: Low
  • Versions: 4.2.0-5.4.6,6.0.0-6.1.1
  • Exploit type: XSS
  • Reported Date: 2026-05-07
  • Fixed Date: 2026-07-07
  • CVE Number: CVE-2026-48949

  Description

  Lack of validation leads to an XSS vulnerability in the MFA management views.

  Affected Installs

  Joomla! CMS versions 4.2.0-5.4.5,6.0.0-6.1.1

  Solution

  Upgrade to version 5.4.7, 6.1.2

  Contact

  The JSST at the Joomla! Security Centre.

  Reported By:  Jorian Woltjer

• [20260702] - Core - Incorrect Access Control in com_contact vcf download

  • Project: Joomla!
  • SubProject: CMS
  • Impact: Low
  • Severity: Low
  • Probability: Low
  • Versions: 3.0.0-5.4.6,6.0.0-6.1.1
  • Exploit type: Incorrect Access Control
  • Reported Date: 2026-05-07
  • Fixed Date: 2026-07-07
  • CVE Number: CVE-2026-48948

  Description

  An improper access check allows user to download vcard exports of com_contact contacts that are inaccessible.

  Affected Installs

  Joomla! CMS versions 3.0.0-5.4.5,6.0.0-6.1.1

  Solution

  Upgrade to version 5.4.7, 6.1.2

  Contact

  The JSST at the Joomla! Security Centre.

  Reported By:  Jorian Woltjer

• [20260701] - Core - Incorrect Access Control in com_media webservice endpoints

  • Project: Joomla!
  • SubProject: CMS
  • Impact: Moderate
  • Severity: Low
  • Probability: Low
  • Versions: 4.1.0-5.4.6,6.0.0-6.1.1
  • Exploit type: Incorrect Access Control
  • Reported Date: 2026-05-05
  • Fixed Date: 2026-07-07
  • CVE Number: CVE-2026-48947

  Description

  An improper access check allows privileged users to overwrite media files without editing permissions.

  Affected Installs

  Joomla! CMS versions 4.1.0-5.4.6,6.0.0-6.1.1

  Solution

  Upgrade to version 5.4.7, 6.1.2

  Contact

  The JSST at the Joomla! Security Centre.

  Reported By:  Federico Brasili

• [20260520] - Framework - Inadequate content filtering within the cleanAttributes filter code

  • Project: Joomla!
  • SubProject: Framewok
  • Impact: Moderate
  • Severity: Moderate
  • Probability: Moderate
  • Versions: 3.0.0-5.4.5,6.0.0-6.1.0
  • Exploit type: XSS
  • Reported Date: 2026-05-04
  • Fixed Date: 2026-05-26
  • CVE Number: CVE-2026-48905

  Description

  Lack of input filtering leads to an XSS vector in the HTML filter code.

  Affected Installs

  Joomla! CMS versions 3.0.0-5.4.5,6.0.0-6.1.0

  Solution

  Upgrade to version 5.4.6,6.1.1

  Contact

  The JSST at the Joomla! Security Centre.

  Reported By:  Jesper den Boer

• [20260519] - Framework - Inadequate content filtering within the checkAttribute filter code

  • Project: Joomla!
  • SubProject: Framewok
  • Impact: Moderate
  • Severity: Moderate
  • Probability: Moderate
  • Versions: 3.0.0-5.4.5,6.0.0-6.1.0
  • Exploit type: XSS
  • Reported Date: 2026-04-21
  • Fixed Date: 2026-05-26
  • CVE Number: CVE-2026-48903

  Description

  Inadequate content filtering within the checkAttribute methods leads to XSS vulnerabilities in various components.

  Affected Installs

  Joomla! CMS versions 3.0.0-5.4.5,6.0.0-6.1.0

  Solution

  Upgrade to version 5.4.6,6.1.1

  Contact

  The JSST at the Joomla! Security Centre.

  Reported By:  JSST

• [20260518] - Core - Transport encryption downgrade for password and username reset links

  • Project: Joomla!
  • SubProject: CMS
  • Impact: Low
  • Severity: Low
  • Probability: Low
  • Versions: 3.9.0-5.4.5,6.0.0-6.1.0
  • Exploit type: Mixed Content
  • Reported Date: 2026-04-20
  • Fixed Date: 2026-05-26
  • CVE Number: CVE-2026-48902

  Description

  The password and username reset features created plain http links for https connections if the "Force SSL" flag wasn't explicitly set.

  Affected Installs

  Joomla! CMS versions 3.9.0-5.4.5,6.0.0-6.1.0

  Solution

  Upgrade to version 5.4.6,6.1.1

  Contact

  The JSST at the Joomla! Security Centre.

  Reported By:  ZeroXJacks, Github

• [20260517] - Core - Incorrect Cache Key Construction for InputFilter objects

  • Project: Joomla!
  • SubProject: CMS
  • Impact: Low
  • Severity: Low
  • Probability: Low
  • Versions: 4.0.0-5.4.5,6.0.0-6.1.0
  • Exploit type: Incorrect Cache Key Construction
  • Reported Date: 2025-11-14
  • Fixed Date: 2026-05-26
  • CVE Number: CVE-2026-48901

  Description

  The InputFilter::getInstance() method omitted a security sensitive parameter from the instance cache key.

  Affected Installs

  Joomla! CMS versions 4.0.0-5.4.5,6.0.0-6.1.0

  Solution

  Upgrade to version 5.4.6,6.1.1

  Contact

  The JSST at the Joomla! Security Centre.

  Reported By:  ZeroXJacks, Github

• [20260516] - Core - Incorrect Access Control in com_scheduler

  • Project: Joomla!
  • SubProject: CMS
  • Impact: Moderate
  • Severity: Low
  • Probability: Low
  • Versions: 4.1.0-5.4.5,6.0.0-6.1.0
  • Exploit type: Incorrect Access Control
  • Reported Date: 2026-04-29
  • Fixed Date: 2026-05-26
  • CVE Number: CVE-2026-48900

  Description

  An improper access check allowed low privileged users to edit the task types of existing scheduler tasks.

  Affected Installs

  Joomla! CMS versions 4.1.0-5.4.5,6.0.0-6.1.0

  Solution

  Upgrade to version 5.4.6,6.1.1

  Contact

  The JSST at the Joomla! Security Centre.

  Reported By:  Federico Brasili, Linkedin

• [20260515] - Core - Incorrect Access Control in sample data plugins

  • Project: Joomla!
  • SubProject: CMS
  • Impact: High
  • Severity: Moderate
  • Probability: Moderate
  • Versions: 4.0.0-5.4.5,6.0.0-6.1.0
  • Exploit type: Incorrect Access Control
  • Reported Date: 2026-04-23
  • Fixed Date: 2026-05-26
  • CVE Number: CVE-2026-48899

  Description

  An improper access check allow unauthorized users to perform actions related to the installation of sampledata.

  Affected Installs

  Joomla! CMS versions 4.0.0-5.4.5,6.0.0-6.1.0

  Solution

  Upgrade to version 5.4.6,6.1.1

  Contact

  The JSST at the Joomla! Security Centre.

  Reported By:  廖双, JSST

• [20260514] - Core - Privilege escalation through com_users webservice endpoints

  • Project: Joomla!
  • SubProject: CMS
  • Impact: High
  • Severity: Moderate
  • Probability: Low
  • Versions: 4.0.0-5.4.5,6.0.0-6.1.0
  • Exploit type: Privilege Escalation
  • Reported Date: 2026-04-15
  • Fixed Date: 2026-05-26
  • CVE Number: CVE-2026-48904

  Description

  An improper access check allows privelege escalation through the com_users group editing webservice endpoint.

  Affected Installs

  Joomla! CMS versions 4.0.0-5.4.5,6.0.0-6.1.0

  Solution

  Upgrade to version 5.4.6,6.1.1

  Contact

  The JSST at the Joomla! Security Centre.

  Reported By:  Christos Papakonstantinou, Cantina

• [20260513] - Core - Privilege escalation through com_users batch task

  • Project: Joomla!
  • SubProject: CMS
  • Impact: High
  • Severity: High
  • Probability: Low
  • Versions: 4.0.0-5.4.5,6.0.0-6.1.0
  • Exploit type: Privilege Escalation
  • Reported Date: 2026-04-15
  • Fixed Date: 2026-05-26
  • CVE Number: CVE-2026-48898

  Description

  An improper access check allows privlege escalation through the com_users batch task.

  Affected Installs

  Joomla! CMS versions 4.0.0-5.4.5,6.0.0-6.1.0

  Solution

  Upgrade to version 5.4.6,6.1.1

  Contact

  The JSST at the Joomla! Security Centre.

  Reported By:  Adrian Junge aka vulno, Christos Papakonstantinou, Cantina