Anuncios de seguridad Joomla

1. [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

2. [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

3. [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

4. [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

5. [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