An issue was discovered in Joomla! before 3.9.17. Improper input validations in the usergroup table class could lead to a broken ACL configuration.

An issue was discovered in Joomla! before 3.9.16. Missing length checks in the user table can lead to the creation of users with duplicate usernames and/or email addresses.

Joomla! before 1.0.11 does not properly unset variables when the input data includes a numeric parameter with a value matching an alphanumeric parameter's hash value, which allows remote attackers to have an unspecified impact. NOTE: it could be argued that this vulnerability is due to a bug in the unset PHP command (CVE-2006-3017) and the proper fix should be in PHP; if so, then this should not be treated as a vulnerability in Joomla!.

Joomla! com_mailto 1.5.x through 1.5.13 has an automated mail timeout bypass.

The password reset functionality in Joomla! 1.5.x through 1.5.24 uses weak random numbers, which makes it easier for remote attackers to change the passwords of arbitrary users via unspecified vectors.

The Kide Shoutbox (com_kide) component 0.4.6 for Joomla! does not properly perform authentication, which allows remote attackers to post messages with an arbitrary account name via an insertar action to index.php. NOTE: the provenance of this information is unknown; the details are obtained solely from third party information.

Improper Access Controls allows backend users to overwrite their username when disallowed.

In Joomla! before 3.9.19, the default settings of the global textfilter configuration do not block HTML inputs for Guest users.

An issue was discovered in Joomla! 3.0.0 through 3.9.24. Incorrect ACL checks could allow unauthorized change of the category for an article.

An issue was discovered in Joomla! 2.5.0 through 3.9.27. CMS functions did not properly termine existing user sessions when a user's password was changed or the user was blocked.

An issue was discovered in Joomla! before 3.8.12. Inadequate checks regarding disabled fields can lead to an ACL violation.

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.

Insufficient state checks lead to a vector that allows to bypass 2FA checks.

An issue was discovered in Joomla! 3.0.0 through 3.9.24. com_media allowed paths that are not intended for image uploads

In Joomla! 1.6.0 through 3.6.5 (fixed in 3.7.0), inadequate filtering of form contents allows overwriting the author of an article.

Joomla! before 2.5.3 allows Admin Account Creation.

An issue was discovered in Joomla! 3.0.0 through 3.10.6 & 4.0.0 through 4.1.0. Extracting an specifilcy crafted tar package could write files outside of the intended path.

An issue was discovered in Joomla! through 3.9.19. Missing validation checks on the usergroups table object can result in a broken site configuration.

An issue was discovered in Joomla! before 3.9.17. Incorrect ACL checks in the access level section of com_users allow the unauthorized deletion of usergroups.

An issue was discovered in Joomla! before 3.9.17. Incorrect ACL checks in the access level section of com_users allow the unauthorized editing of usergroups.

Joomla! core before 2.5.3 allows unauthorized password change.

An issue was discovered in components/com_users/models/registration.php in Joomla! before 3.6.5. Incorrect filtering of registration form data stored to the session on a validation error enables a user to gain access to a registered user's account and reset the user's group mappings, username, and password, as demonstrated by submitting a form that targets the `registration.register` task.

An issue was discovered in Joomla! 1.6.0 through 3.9.24. Inadequate filtering of form contents could allow to overwrite the author field.

In Joomla! before 3.9.11, inadequate checks in com_contact could allow mail submission in disabled forms.

An issue was discovered in Joomla! before 3.9.5. The "refresh list of helpsites" endpoint of com_users lacks access checks, allowing calls from unauthenticated users.

Joomla! before 1.5.12 does not perform a JEXEC check in unspecified files, which allows remote attackers to obtain the installation path via unspecified 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.

Directory traversal vulnerability in Joomla! 3.2.0 through 3.3.x and 3.4.x before 3.4.6 allows remote attackers to have unspecified impact via unknown vectors.

Directory traversal vulnerability in Joomla! 3.4.x before 3.4.6 allows remote attackers to have unspecified impact via directory traversal sequences in the XML install file in an extension package archive.

Joomla! 1.5.x, 2.x, and 3.x before 3.4.6 allow remote attackers to conduct PHP object injection attacks and execute arbitrary PHP code via the HTTP User-Agent header, as exploited in the wild in December 2015.

An issue was discovered in Joomla! 2.5.0 through 3.8.8 before 3.8.9. The autoload code checks classnames to be valid, using the "class_exists" function in PHP. In PHP 5.3, this function validates invalid names as valid, which can result in a Local File Inclusion.

An issue was discovered in com_fields in Joomla! Core before 3.8.8. Inadequate filtering allows users authorised to create custom fields to manipulate the filtering options and inject an unvalidated option.

An issue was discovered in Joomla! 2.5.0 through 3.9.27. Missing validation of input could lead to a broken usergroups table.

JRequest in Joomla! 1.5 before 1.5.7 does not sanitize variables that were set with JRequest::setVar, which allows remote attackers to conduct "variable injection" attacks and have unspecified other impact.

An issue was discovered in Joomla! 3.2.0 through 3.9.24. Missing input validation within the template manager.

administrator/components/com_media/helpers/media.php in the media manager in Joomla! 2.5.x before 2.5.14 and 3.x before 3.1.5 allows remote authenticated users or remote attackers to bypass intended access restrictions and upload files with dangerous extensions via a filename with a trailing . (dot), as exploited in the wild in August 2013.

administrator/index.php in the installer component (com_installer) in Joomla! 1.5 Beta1, Beta2, and RC1 allows remote authenticated administrators to upload arbitrary files to tmp/ via the "Upload Package File" functionality, which is accessible when com_installer is the value of the option parameter.

Joomla! 1.5 before RC2 (aka Endeleo) allows remote attackers to obtain sensitive information (the full path) via unspecified vectors, probably involving direct requests to certain PHP scripts in tmpl/ directories.

Multiple unspecified vulnerabilities in Joomla! before 1.0.11, related to unvalidated input, allow attackers to have an unknown impact via unspecified vectors involving the (1) mosMail, (2) JosIsValidEmail, and (3) josSpoofValue functions; (4) the lack of inclusion of globals.php in administrator/index.php; (5) the Admin User Manager; and (6) the poll module.

The com_rss option (rss.php) in (1) Mambo and (2) Joomla! allows remote attackers to cause a denial of service (disk consumption and possibly web-server outage) via multiple requests with different values of the feed parameter.

An issue was discovered in Joomla! 4.2.0 through 4.3.1. Lack of input validation caused an open redirect and XSS issue within the new mfa selection screen.

Live Chat (com_livechat) component 1.0 for Joomla! allows remote attackers to use the xmlhttp.php script as an open HTTP proxy to hide network scanning activities or scan internal networks via a GET request with a full URL in the query string.

The mailto (aka com_mailto) component in Joomla! 1.5 before 1.5.7 sends e-mail messages without validating the URL, which allows remote attackers to transmit spam.

plugins/system/remember/remember.php in Joomla! 2.5.x before 2.5.10 and 3.0.x before 3.0.4 does not properly handle an object obtained by unserializing a cookie, which allows remote authenticated users to conduct PHP object injection attacks and cause a denial of service via unspecified vectors.

The register method in the UsersModelRegistration class in controllers/user.php in the Users component in Joomla! before 3.6.4 allows remote attackers to gain privileges by leveraging incorrect use of unfiltered data when registering on a site.

The register method in the UsersModelRegistration class in controllers/user.php in the Users component in Joomla! before 3.6.4, when registration has been disabled, allows remote attackers to create user accounts by leveraging failure to check the Allow User Registration configuration setting.

The news module in CMSMS before 1.9.4.3 allows remote attackers to corrupt new articles.

The sandboxing code in libarchive 3.2.0 and earlier mishandles hardlink archive entries of non-zero data size, which might allow remote attackers to write to arbitrary files via a crafted archive file.

CRLF injection vulnerability in HP System Management Homepage (SMH) before 6.2 allows remote attackers to inject arbitrary HTTP headers and conduct HTTP response splitting attacks via unspecified vectors.

Arora, possibly 0.11 and other versions, does not use a certain font when rendering certificate fields in a security dialog, which allows remote attackers to spoof the common name (CN) of a certificate via rich text.