Security Announcements
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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[20210304] - Core - XSS within the feed parser library
- 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.
[20210306] - Core - com_media allowed paths that are not intended for image uploads
- 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.
[20210307] - Core - ACL violation within com_content frontend editing
- 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.
[20210309] - Core - Inadequate filtering of form contents could allow to overwrite the author field
- 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.
[20210103] - Core - XSS in com_tags image parameters
- 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.
[20210102] - Core - XSS in mod_breadcrumbs aria-label attribute
- 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.
[20210101] - Core - com_modules exposes module names
- 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.
[20201107] - Core - Write ACL violation in multiple core views
- 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.
[20201106] - Core - CSRF in com_privacy emailexport feature
- 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.
[20201105] - Core - User Enumeration in backend login
- 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.