#xss

Failing to properly encode user input, frontend forms handled by the form framework (system extension “form”) are vulnerable to cross-site scripting.

Failing to properly encode information from external sources, language pack handling in the install tool is vulnerable to cross-site scripting.

Failing to properly encode user input, templates using built-in Fluid ViewHelpers are vulnerable to cross-site scripting.

It has been discovered that cookies created in the Install Tool are not hardened to be submitted only via HTTP. In combination with other vulnerabilities such as cross-site scripting it can lead to hijacking an active and valid session in the Install Tool.

Failing to properly encode user input, login status display is vulnerable to cross-site scripting in the website frontend. A valid user account is needed in order to exploit this vulnerability - either a backend user or a frontend user having the possibility to modify their user profile. Template patterns that are affected are - ###FEUSER_[fieldName]### using system extension felogin - <!--###USERNAME###--> for regular frontend rendering (pattern can be defined individually using TypoScript setting config.USERNAME_substToken)

Failing to properly encode user input, notifications shown in modal windows in the TYPO3 backend are vulnerable to cross-site scripting. A valid backend user account is needed in order to exploit this vulnerability.

Failing to properly encode user input, online media asset rendering (*.youtube and *.vimeo files) is vulnerable to cross-site scripting. A valid backend user account or write access on the server system (e.g. SFTP) is needed in order to exploit this vulnerability.

ORing IAP-420 version 2.01e suffers from remote command injection and persistent cross site scripting vulnerabilities.

Cybersecurity researchers have warned that multiple high-severity security vulnerabilities in WordPress plugins are being actively exploited by threat actors to create rogue administrator accounts for follow-on exploitation. "These vulnerabilities are found in various WordPress plugins and are prone to unauthenticated stored cross-site scripting (XSS) attacks due to inadequate input sanitization

The BackOffice of Thelia (`error.html` template) has a cross-site scripting vulnerability in version 2.1.0 and 2.1.1 but not version 2.0.X. Version 2.1.2 contains a patch for the issue.