An issue was discovered in Joomla! 2.5.0 through 3.9.24. Missing filtering of messages showed to users that could lead to xss issues.

Cross-site scripting (XSS) vulnerability in modules/mod_languages/tmpl/default.php in the Language Switcher module for Joomla! 2.5.x before 2.5.7 allows remote attackers to inject arbitrary web script or HTML via the PATH_INFO to index.php. NOTE: some of these details are obtained from third party information.

Cross-site scripting (XSS) vulnerability in the language search component in Joomla! before 3.0.1 allows remote attackers to inject arbitrary web script or HTML via unspecified vectors, related to a "typographical error."

Cross-site scripting (XSS) vulnerability in the Quickl Form component for Joomla! allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.

Cross-site scripting (XSS) vulnerability in the comments module in the RSGallery2 (com_rsgallery2) component before 2.3.0 for Joomla! 1.5.x, and before 3.2.0 for Joomla! 2.5.x, allows remote attackers to inject arbitrary web script or HTML via crafted BBCode markup in a comment.

Cross-site scripting (XSS) vulnerability in Joomla! 2.5.3 allows remote attackers to inject arbitrary web script or HTML via the Host HTTP Header.

Cross-site scripting (XSS) vulnerability in the Profile List in the Joomla Content Editor (JCE) component before 2.1 for Joomla! allows remote attackers to inject arbitrary web script or HTML via the search parameter to administrator/index.php.

Cross-site scripting (XSS) vulnerability in the ja_purity template for Joomla! 1.5.26 and earlier allows remote attackers to inject arbitrary web script or HTML via the Mod* cookie parameter to html/modules.php.

Cross-site scripting (XSS) vulnerability in includes/convert.php in D-Mack Media Currency Converter (mod_currencyconverter) module 1.0.0 for Joomla! allows remote attackers to inject arbitrary web script or HTML via the from parameter.

Cross-site scripting (XSS) vulnerability in the update manager in Joomla! 2.5.x before 2.5.4 allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.

Multiple cross-site scripting (XSS) vulnerabilities in Joomla! 1.6.3 and earlier allow remote attackers to inject arbitrary web script or HTML via unspecified vectors.

Cross-site scripting (XSS) vulnerability in Joomla! before 1.5.12 allows remote attackers to inject arbitrary web script or HTML via the PATH_INFO.

Multiple cross-site scripting (XSS) vulnerabilities in the Joomulus (mod_joomulus) module 2.0 for Joomla! allow remote attackers to inject arbitrary web script or HTML via the tagcloud parameter in a tags action to (1) tagcloud_ell.swf, (2) tagcloud_eng.swf, (3) tagcloud_por.swf, (4) tagcloud_rus.swf, and possibly (5) tagcloud_jpn.swf. NOTE: the provenance of this information is unknown; the details are obtained solely from third party information.

Cross-site scripting (XSS) vulnerability in modules/mod_yj_whois.php in the YJ Whois component 1.0x and 1.5.x for Joomla! allows remote attackers to inject arbitrary web script or HTML via the domain parameter to index.php. NOTE: some of these details are obtained from third party information.

Cross-site scripting (XSS) vulnerability in the login module in Joomla! 3.4.x before 3.4.4 allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.

In Joomla! 3.2.0 through 3.6.5 (fixed in 3.7.0), inadequate escaping of file and folder names leads to XSS vulnerabilities in the template manager component.

An issue was discovered in Joomla! 3.0.0 through 3.9.27. Inadequate escaping in the rules field of the JForm API leads to a XSS vulnerability.

An issue was discovered in Joomla! 3.0.0 through 3.9.26. HTML was missing in the executable block list of MediaHelper::canUpload, leading to XSS attack vectors.

An issue was discovered in Joomla! 3.1.0 through 3.9.23. The lack of escaping of image-related parameters in multiple com_tags views cause lead to XSS attack vectors.

Joomla! 1.6.x before 1.6.2 does not prevent page rendering inside a frame in a third-party HTML document, which makes it easier for remote attackers to conduct clickjacking attacks via a crafted web site.

An issue was discovered in Joomla! Core before 3.8.8. A long running background process, such as remote checks for core or extension updates, could create a race condition where a session that was expected to be destroyed would be recreated.

An issue was discovered in Joomla! before 3.9.3. The "No Filtering" textfilter overrides child settings in the Global Configuration. This is intended behavior. However, it might be unexpected for the user because the configuration dialog lacks an additional message to explain this.

Multiple cross-site scripting (XSS) vulnerabilities in Joomla! before 1.0.4 allow remote attackers to inject arbitrary web script or HTML via (1) "GET and other variables" and (2) "SEF".

jQuery before 3.4.0, as used in Drupal, Backdrop CMS, and other products, mishandles jQuery.extend(true, {}, ...) because of Object.prototype pollution. If an unsanitized source object contained an enumerable __proto__ property, it could extend the native Object.prototype.

An issue was discovered in Joomla! 3.0.0 through 3.9.26. A missing token check causes a CSRF vulnerability in the AJAX reordering endpoint.

Cross-site scripting (XSS) vulnerability in mod_lettermansubscribe.php in the Letterman Subscriber (mod_letterman) before 1.2.5 module for Joomla! allows remote attackers to inject arbitrary web script or HTML via the Itemid parameter.

Joomla! 2.5.x before 2.5.8 and 3.0.x before 3.0.2 allows remote attackers to conduct clickjacking attacks via unspecified vectors involving "Inadequate protection."

CRLF injection vulnerability in Joomla! before 1.0.13 (aka Sunglow) allows remote attackers to inject arbitrary HTTP headers and probably conduct HTTP response splitting attacks via CRLF sequences in the url parameter. NOTE: this can be leveraged for cross-site scripting (XSS) attacks. NOTE: some of these details are obtained from third party information.

An issue was discovered in Joomla! 3.0.0 through 3.9.24. Extracting an specifilcy crafted zip package could write files outside of the intended path.

An issue was discovered in Joomla! 2.5.0 through 3.9.27. Install action in com_installer lack the required hardcoded ACL checks for superusers. A default system is not affected cause the default ACL for com_installer is limited to super users already.

An issue was discovered in Joomla! 3.0.0 through 3.9.26. A missing token check causes a CSRF vulnerability in data download endpoints in com_banners and com_sysinfo.

Various module chromes didn't properly process inputs, leading to XSS vectors.

The mail template feature lacks an escaping mechanism, causing XSS vectors in multiple extensions.

The wrapper extensions do not correctly validate inputs, leading to XSS vectors.

Multiple Cross-site Scripting (XSS) vulnerabilities exist in Joomla! through 1.7.0 in index.php in the search word, extension, asset, and author parameters.

Lack of output escaping in the id attribute of menu lists.

The stripImages and stripIframes methods didn't properly process inputs, leading to XSS vectors.

An issue was discovered in Joomla! 4.0.0 through 4.2.4. Inadequate filtering of potentially malicious user input leads to reflected XSS vulnerabilities in com_media.

Inadequate input validation leads to XSS vulnerabilities in the accessiblemedia field.

Improper handling of input could lead to an XSS vector in the StringHelper::truncate method.

The fancyselect list field layout does not correctly escape inputs, leading to a self-XSS vector.

Inadequate input validation for media selection fields lead to XSS vulnerabilities in various extensions.

Inadequate escaping of mail addresses lead to XSS vulnerabilities in various components.

Inadequate content filtering leads to XSS vulnerabilities in various components.

Multiple cross-site scripting (XSS) vulnerabilities in the Back End in Joomla! 1.5.x before 1.5.20 allow remote authenticated users to inject arbitrary web script or HTML via administrator screens.

The Custom Fields component not correctly filter inputs, leading to a XSS vector.

Multiple cross-site scripting (XSS) vulnerabilities in Joomla! 1.5 through 1.5.9 allow remote attackers to inject arbitrary web script or HTML via unspecified vectors to the (1) com_admin component, (2) com_search component when "Gather Search Statistics" is enabled, and (3) the category view in the com_content component.

Multiple cross-site scripting (XSS) vulnerabilities in Joomla! 1.5.7 and earlier allow remote authenticated users with certain privileges to inject arbitrary web script or HTML via (1) the title and description parameters to the com_weblinks module and (2) unspecified vectors in the com_content module related to "article submission."

An issue was discovered in Joomla! before 3.8.12. Inadequate output filtering on the user profile page could lead to a stored XSS attack.