Developer Network™ 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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- Project: Joomla!
- SubProject: CMS
- Impact: Low
- Severity: Low
- Versions: 3.0.0 - 3.9.26
- Exploit type: CSRF
- Reported Date: 2021-05-07
- Fixed Date: 2021-05-25
- CVE Number: CVE-2021-26033
Description
A missing token check causes a CSRF vulnerability in the AJAX reordering endpoint.
Affected Installs
Joomla! CMS versions 3.0.0 - 3.9.26
Solution
Upgrade to version 3.9.27
Contact
The JSST at the Joomla! Security Centre.
- Project: Joomla!
- SubProject: CMS
- Impact: Low
- Severity: Low
- Versions: 3.0.0 - 3.9.26
- Exploit type: XSS
- Reported Date: 2021-03-05
- Fixed Date: 2021-05-25
- CVE Number: CVE-2021-26032
Description
HTML was missing in the executable block list of MediaHelper::canUpload, leading to XSS attack vectors.
Affected Installs
Joomla! CMS versions 3.0.0 - 3.9.26
Solution
Upgrade to version 3.9.27
Contact
The JSST at the Joomla! Security Centre.
- Project: Joomla!
- SubProject: CMS
- Impact: Low
- Severity: Low
- Versions: 3.0.0 - 3.9.25
- Exploit type: LFI
- Reported Date: 2021-01-03
- Fixed Date: 2021-04-13
- CVE Number: CVE-2021-26031
Description
Inadequate filters on module layout settings could lead to an LFI.
Affected Installs
Joomla! CMS versions 3.0.0 - 3.9.25
Solution
Upgrade to version 3.9.26
Contact
The JSST at the Joomla! Security Centre.
- Project: Joomla!
- SubProject: CMS
- Impact: Low
- Severity: Low
- Versions: 3.0.0 - 3.9.25
- Exploit type: XSS
- Reported Date: 2021-03-09
- Fixed Date: 2021-04-13
- CVE Number: CVE-2021-26030
Description
Inadequate escaping allowed XSS attacks using the logo parameter of the default templates on error pages.
Affected Installs
Joomla! CMS versions 3.0.0 - 3.9.25
Solution
Upgrade to version 3.9.26
Contact
The JSST at the Joomla! Security Centre.
- Project: Joomla!
- SubProject: CMS
- Impact: Low
- Severity: Low
- Versions: 3.2.0 - 3.9.24
- Exploit type: Improper Input Validation
- Reported Date: 2020-05-07
- Fixed Date: 2021-03-02
- CVE Number: CVE-2021-23131
Description
Missing input validation within the template manager.
Affected Installs
Joomla! CMS versions 3.2.0 - 3.9.24
Solution
Upgrade to version 3.9.25
Contact
The JSST at the Joomla! Security Centre.
- Project: Joomla!
- SubProject: CMS
- Impact: Low
- Severity: Low
- Versions: 3.2.0 - 3.9.24
- Exploit type: Insecure Randomness
- Reported Date: 2021-01-12
- Fixed Date: 2021-03-02
- CVE Number: CVE-2021-23126, CVE-2021-23127
Description
Usage of the insecure rand() function within the process of generating the 2FA secret.
Usage of an insufficient length for the 2FA secret accoring to RFC 4226 of 10 bytes vs 20 bytes.
Additional details as well as a more contexts for exising sites can be found in the docs: https://docs.joomla.org/J3.x:Changes_to_the_2FA_token_generation_recommendations_for_existing_sites
This issue has been coordinated with Akeeba Ltd as contributor of the original FOF codebase to the core.
Affected Installs
Joomla! CMS versions 3.2.0 - 3.9.24
Solution
Upgrade to version 3.9.25
Contact
The JSST at the Joomla! Security Centre.
- Project: Joomla!
- SubProject: CMS
- Impact: Low
- Severity: Low
- Versions: 3.2.0 - 3.9.24
- Exploit type: Insecure Randomness
- Reported Date: 2021-01-13
- Fixed Date: 2021-03-02
- CVE Number: CVE-2021-23128
Description
The core shipped but unused randval implementation within FOF (FOFEncryptRandval) used an potential insecure implemetation. That has now been replaced with a call to "random_bytes()" and its backport that is shipped within random_compat.
This issue has been coordinated with Akeeba Ltd as contributor of the original FOF codebase to the core.
Affected Installs
Joomla! CMS versions 3.2.0 - 3.9.24
Solution
Upgrade to version 3.9.25
Contact
The JSST at the Joomla! Security Centre.
- Project: Joomla!
- SubProject: CMS
- Impact: Moderate
- Severity: Low
- Versions: 2.5.0 - 3.9.24
- Exploit type: XSS
- Reported Date: 2020-05-07
- Fixed Date: 2021-03-02
- CVE Number: CVE-2021-23129
Description
Missing filtering of messages showed to users that 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.
- Project: Joomla!
- SubProject: CMS
- Impact: Moderate
- Severity: Low
- Versions: 3.0.0 - 3.9.24
- Exploit type: Path Traversal
- Reported Date: 2020-09-08
- Fixed Date: 2021-03-02
- CVE Number: CVE-2021-26028
Description
Extracting an specifilcy crafted zip package could write files outside of the intended path.
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.
- 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.
- 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.
- 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.
- 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.
- 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.
- 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.
- 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.
- 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.
- 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.
- 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.
- Project: Joomla!
- SubProject: CMS
- Impact: High
- Severity: Low
- Versions: 3.0.0-3.9.22
- Exploit type: SQL Injection
- Reported Date: 2020-10-13
- Fixed Date: 2020-11-24
- CVE Number: CVE-2020-35613
Description
Improper filter blacklist configuration leads to a SQL injection vulnerability in the backend user list.
Affected Installs
Joomla! CMS versions 3.0.0 - 3.9.22
Solution
Upgrade to version 3.9.23
Contact
The JSST at the Joomla! Security Centre.
- Project: Joomla!
- SubProject: CMS
- Impact: Moderate
- Severity: Low
- Versions: 2.5.0-3.9.22
- Exploit type: Path traversal
- Reported Date: 2020-10-06
- Fixed Date: 2020-11-24
- CVE Number: CVE-2020-35612
Description
The folder parameter of mod_random_image lacked input validation, leading to a path traversal vulnerability.
Affected Installs
Joomla! CMS versions 2.5.0 - 3.9.22
Solution
Upgrade to version 3.9.23
Contact
The JSST at the Joomla! Security Centre.
- Project: Joomla!
- SubProject: CMS
- Impact: Moderate
- Severity: Low
- Versions: 2.5.0-3.9.22
- Exploit type: Information Disclosure
- Reported Date: 2020-09-23
- Fixed Date: 2020-11-24
- CVE Number: CVE-2020-35611
Description
The globlal configuration page does not remove secrets from the HTML output, disclosing the current values.
Affected Installs
Joomla! CMS versions 2.5.0 - 3.9.22
Solution
Upgrade to version 3.9.23
Contact
The JSST at the Joomla! Security Centre.
- Project: Joomla!
- SubProject: CMS
- Impact: Moderate
- Severity: Low
- Versions: 2.5.0-3.9.22
- Exploit type: Information Disclosure
- Reported Date: 2020-06-21
- Fixed Date: 2020-11-24
- CVE Number: CVE-2020-35610
Description
The autosuggestion feature of com_finder did not respect the access level of the corresponding terms.
Affected Installs
Joomla! CMS versions 2.5.0 - 3.9.22
Solution
Upgrade to version 3.9.23
Contact
The JSST at the Joomla! Security Centre.
- Project: Joomla!
- SubProject: CMS
- Impact: Low
- Severity: Low
- Versions: 3.0.0-3.9.20
- Exploit type: Open Redirect
- Reported Date: 2020-July-05
- Fixed Date: 2020-August-25
- CVE Number: CVE-2020-24598
Description
Lack of input validation in com_content leads to an open redirect.
Affected Installs
Joomla! CMS versions 3.0.0 - 3.9.20
Solution
Upgrade to version 3.9.21
Contact
The JSST at the Joomla! Security Centre.
- Project: Joomla!
- SubProject: CMS
- Impact: Low
- Severity: Low
- Versions: 2.5.0-3.9.20
- Exploit type: Directory Traversal
- Reported Date: 2020-February-02
- Fixed Date: 2020-August-25
- CVE Number: CVE-2020-24597
Description
Lack of input validation allows com_media root paths outside of the webroot.
Affected Installs
Joomla! CMS versions 2.5.0 - 3.9.20
Solution
Upgrade to version 3.9.21
Contact
The JSST at the Joomla! Security Centre.