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

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

The language file parsing process could be manipulated to expose environment variables. Environment variables might contain sensible information.

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.

An issue was discovered in Joomla! 4.2.0 through 4.3.1. The lack of rate limiting allowed brute force attacks against MFA methods.

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.

An issue was discovered in Joomla! 4.2.0 through 4.2.3. Inadequate filtering of potentially malicious user input leads to reflected XSS vulnerabilities in various components.

An issue was discovered in Joomla! 4.0.0 through 4.2.3. Sites with publicly enabled debug mode exposed data of previous requests.

An issue was discovered in Joomla! 4.2.0. Multiple Full Path Disclosures because of missing '_JEXEC or die check' caused by the PSR12 changes.

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.