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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Missing access check in framework files could lead to a path disclosure.
Joomla! CMS versions 3.8.0 - 3.9.13
Upgrade to version 3.9.14
The JSST at the Joomla! Security Centre.
Missing access check in the phputf8 mapping files could lead to an path disclosure.
Joomla! CMS versions 3.6.0 - 3.9.12
Upgrade to version 3.9.13
The JSST at the Joomla! Security Centre.
A missing token check in com_template causes a CSRF vulnerability.
Joomla! CMS versions 3.2.0 - 3.9.12
Upgrade to version 3.9.13
The JSST at the Joomla! Security Centre.
Inadequate escaping allowed XSS attacks using the logo parameter of the default templates.
Joomla! CMS versions 3.0.0 - 3.9.11
Upgrade to version 3.9.12
The JSST at the Joomla! Security Centre.
Inadequate checks in com_contact could allowed mail submission in disabled forms.
Joomla! CMS versions 1.6.2 - 3.9.10
Upgrade to version 3.9.11
The JSST at the Joomla! Security Centre.
Inadequate filtering allows users authorised to create custom fields to manipulate the filtering options and inject an unvalidated option.
Joomla! CMS versions 3.9.7 - 3.9.8
Upgrade to version 3.9.9
The JSST at the Joomla! Security Centre.
The update server URL of com_joomlaupdate can be manipulated by non Super-Admin users.
Joomla! CMS versions 3.8.13 through 3.9.6
Upgrade to version 3.9.7
The JSST at the Joomla! Security Centre.
The subform fieldtype does not sufficiently filter or validate input of subfields, this leads to XSS attack vectors.
Joomla! CMS versions 3.6.0 through 3.9.6
Upgrade to version 3.9.7
The JSST at the Joomla! Security Centre.
The CSV export of com_actionslogs is vulnerable to CSV injection.
Joomla! CMS versions 3.9.0 through 3.9.6
Upgrade to version 3.9.7
The JSST at the Joomla! Security Centre.
In Joomla 3.9.3, the vulnerability of insecure deserialization when executing Phar archives was addressed by removing the known attack vector in the Joomla core. In order to intercept file invocations like file_exists or stat on compromised Phar archives the base name has to be determined and checked before allowing to be handled by PHP Phar stream handling. The used implementation however is vulnerable to path traversal leading to scenarios where the Phar archive to be assessed is not the actual (compromised) file.
Joomla! CMS versions 3.9.3 through 3.9.5
Upgrade to version 3.9.6
The JSST at the Joomla! Security Centre.
The debug views of com_users do not properly escape user supplied data, which leads to a potential XSS attack vector.
Joomla! CMS versions 1.7.0 through 3.9.5
Upgrade to version 3.9.6
The JSST at the Joomla! Security Centre.
The $.extend method of JQuery is vulnerable to Object.prototype pollution attacks.
Joomla! CMS versions 3.0.0 through 3.9.4
Upgrade to version 3.9.5
The JSST at the Joomla! Security Centre.
The "refresh list of helpsites" endpoint of com_users lacks access checks, allowing calls from unauthenticated users.
Joomla! CMS versions 3.2.0 through 3.9.4
Upgrade to version 3.9.5
The JSST at the Joomla! Security Centre.
The Media Manager component does not properly sanitise the folder parameter, allowing attackers to act outside the media manager root directory.
Joomla! CMS versions 1.5.0 through 3.9.4
Upgrade to version 3.9.5
The JSST at the Joomla! Security Centre.
The sample data plugins lack ACL checks, allowing unauthorized access.
Joomla! CMS versions 3.8.0 through 3.9.3
Upgrade to version 3.9.4
The JSST at the Joomla! Security Centre.
The media form field lacks escaping, leading to a XSS vulnerability.
Joomla! CMS versions 3.2.0 through 3.9.3
Upgrade to version 3.9.4
The JSST at the Joomla! Security Centre.
The item_title layout in edit views lacks escaping, leading to a XSS vulnerability.
Joomla! CMS versions 3.2.0 through 3.9.3
Upgrade to version 3.9.4
The JSST at the Joomla! Security Centre.
The JSON handler in com_config lacks input validation, leading to XSS vulnerability.
Joomla! CMS versions 3.2.0 through 3.9.3
Upgrade to version 3.9.4
The JSST at the Joomla! Security Centre.
The phar:// stream wrapper can be used for objection injection attacks. We now disallow usage of the phar:// handler for non .phar-files within the CMS globally by implementing the TYPO3 PHAR stream wrapper.
Joomla! CMS versions 2.5.0 through 3.9.2
Upgrade to version 3.9.3
The JSST at the Joomla! Security Centre.
Inadequate parameter handling in JS code could lead to an XSS attack vector.
Joomla! CMS versions 2.5.0 through 3.9.2
Upgrade to version 3.9.3
The JSST at the Joomla! Security Centre.
Inadequate checks at the Global Configuration helpurl settings allowed a stored XSS.
Joomla! CMS versions 2.5.0 through 3.9.2
Upgrade to version 3.9.3
The JSST at the Joomla! Security Centre.
"No Filtering" textfilter overrides child settings in the Global Configuration. This is intended behavior but might be unexpected for the user. An additional message is now shown in the configuration dialog.
Joomla! CMS versions 2.5.0 through 3.9.2
Upgrade to version 3.9.3
The JSST at the Joomla! Security Centre.
A combination of specific webserver configurations, in connection with specific file types and browserside mime-type sniffing causes a XSS attack vector.
Joomla! CMS versions 1.0.0 through 3.9.2
Upgrade to version 3.9.3
The JSST at the Joomla! Security Centre.
Inadequate filtering on URL fields in various core components could lead to an XSS vulnerability.
Joomla! CMS versions 2.5.0 through 3.9.2
Upgrade to version 3.9.3
The JSST at the Joomla! Security Centre.
Inadequate checks at the Global Configuration helpurl settings allowed a stored XSS.
Joomla! CMS versions 2.5.0 through 3.9.1
Upgrade to version 3.9.2
The JSST at the Joomla! Security Centre.