This feed provides announcements of resolved security issues in Joomla! software releases.

For more information about the Joomla! Security Strike Team (JSST) and its processes, please review our Security article.

To report potential security issues, please follow the guidelines in the above referenced article. Please note that we are only able to provide support for the Joomla! CMS, Joomla! Framework, and *.joomla.org network of websites.

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  • Project: Joomla!
  • SubProject: CMS
  • Impact: Moderate
  • Severity: Low
  • Versions: 2.5.0 - 3.9.24
  • Exploit type: XSS
  • Reported Date: 2020-05-05
  • Fixed Date: 2021-03-02
  • CVE Number: CVE-2021-23130

Description

Missing filtering of feed fields could lead to xss issues.

Affected Installs

Joomla! CMS versions 2.5.0 - 3.9.24

Solution

Upgrade to version 3.9.25

Contact

The JSST at the Joomla! Security Centre.

Reported By: Bui Duc Anh Khoa from Viettel Cyber Security
  • Project: Joomla!
  • SubProject: CMS
  • Impact: Moderate
  • Severity: Low
  • Versions: 3.0.0 - 3.9.24
  • Exploit type: Improper Input Validation
  • Reported Date: 2020-02-17
  • Fixed Date: 2021-03-02
  • CVE Number: CVE-2021-23132

Description

com_media allowed paths that are not intended for image uploads.

Affected Installs

Joomla! CMS versions 3.0.0 - 3.9.24

Solution

Upgrade to version 3.9.25

Contact

The JSST at the Joomla! Security Centre.

Reported By: Hoang Kien from VSEC
  • Project: Joomla!
  • SubProject: CMS
  • Impact: Moderate
  • Severity: Low
  • Versions: 3.0.0 - 3.9.24
  • Exploit type: ACL violation
  • Reported Date: 2020-10-25
  • Fixed Date: 2021-03-02
  • CVE Number: CVE-2021-26027

Description

Incorrect ACL checks could allow unauthorized change of the category for an article.

Affected Installs

Joomla! CMS versions 3.0.0 - 3.9.24

Solution

Upgrade to version 3.9.25

Contact

The JSST at the Joomla! Security Centre.

Reported By: Brian Teeman, George Wilson (JSST), David Jardin (JSST)
  • Project: Joomla!
  • SubProject: CMS
  • Impact: Moderate
  • Severity: Low
  • Versions: 1.6.0 - 3.9.24
  • Exploit type: ACL Violation
  • Reported Date: 2021-01-31
  • Fixed Date: 2021-03-02
  • CVE Number: CVE-2021-26029

Description

Inadequate filtering of form contents could allow to overwrite the author field. The affected core components are com_fields, com_categories, com_banners, com_contact, com_newsfeeds and com_tags. 

Affected Installs

Joomla! CMS versions 1.6.0 - 3.9.24

Solution

Upgrade to version 3.9.25

Contact

The JSST at the Joomla! Security Centre.

Reported By: DangKhai from Viettel Cyber Security
  • Project: Joomla!
  • SubProject: CMS
  • Impact: Moderate
  • Severity: Low
  • Versions:3.1.0 - 3.9.23
  • Exploit type: XSS
  • Reported Date: 2020-09-01
  • Fixed Date: 2021-01-12
  • CVE Number: CVE-2021-23125

Description

Lack of escaping of image-related parameters in multiple com_tags views cause lead to XSS attack vectors.

Affected Installs

Joomla! CMS versions 3.1.0 - 3.9.23

Solution

Upgrade to version 3.9.24

Contact

The JSST at the Joomla! Security Centre.

Reported By: Šarūnas Paulauskas
  • Project: Joomla!
  • SubProject: CMS
  • Impact: Moderate
  • Severity: Low
  • Versions:3.9.0 - 3.9.23
  • Exploit type: XSS
  • Reported Date: 2020-09-01
  • Fixed Date: 2021-01-12
  • CVE Number: CVE-2021-23124

Description

Lack of escaping in mod_breadcrumbs aria-label attribute allows XSS attacks.

Affected Installs

Joomla! CMS versions 3.9.0 - 3.9.23

Solution

Upgrade to version 3.9.24

Contact

The JSST at the Joomla! Security Centre.

Reported By: Šarūnas Paulauskas
  • Project: Joomla!
  • SubProject: CMS
  • Impact: Low
  • Severity: Low
  • Versions:3.0.0 - 3.9.23
  • Exploit type: Incorrect Access Control
  • Reported Date: 2020-07-07
  • Fixed Date: 2021-01-12
  • CVE Number: CVE-2021-23123

Description

Lack of ACL checks in the orderPosition endpoint of com_modules leak names of unpublished and/or inaccessible modules.

Affected Installs

Joomla! CMS versions 3.0.0 - 3.9.23

Solution

Upgrade to version 3.9.24

Contact

The JSST at the Joomla! Security Centre.

Reported By: Phil Taylor
  • Project: Joomla!
  • SubProject: CMS
  • Impact: High
  • Severity: Low
  • Versions:1.7.0 - 3.9.22
  • Exploit type: ACL Violation
  • Reported Date: 2018-11-04
  • Fixed Date: 2020-11-24
  • CVE Number: CVE-2020-35616

Description

Lack of input validation while handling ACL rulesets can cause write ACL violations.

Affected Installs

Joomla! CMS versions 1.7.0 - 3.9.22

Solution

Upgrade to version 3.9.23

Contact

The JSST at the Joomla! Security Centre.

Reported By:  Elisa Foltyn, Benjamin Trenkle
  • Project: Joomla!
  • SubProject: CMS
  • Impact: Low
  • Severity: Low
  • Versions: 3.9.0-3.9.22
  • Exploit type: CSRF
  • Reported Date: 2020-10-08
  • Fixed Date: 2020-11-24
  • CVE Number: CVE-2020-35615

Description

A missing token check in the emailexport feature of com_privacy causes a CSRF vulnerability.

Affected Installs

Joomla! CMS versions 3.9.0 - 3.9.22

Solution

Upgrade to version 3.9.23

Contact

The JSST at the Joomla! Security Centre.

Reported By:  Lee Thao from Viettel Cyber Security
  • Project: Joomla!
  • SubProject: CMS
  • Impact: Low
  • Severity: Low
  • Versions: 3.9.0-3.9.22
  • Exploit type: User Enumeration
  • Reported Date: 2020-08-15
  • Fixed Date: 2020-11-24
  • CVE Number: CVE-2020-35614

Description

Improper handling of the username leads to a user enumeration attack vector in the backend login page.

Affected Installs

Joomla! CMS versions 3.9.0 - 3.9.22

Solution

Upgrade to version 3.9.23

Contact

The JSST at the Joomla! Security Centre.

Reported By:  Phil Taylor