The media2click (aka 2 Clicks for External Media) extension 1.x before 1.3.3 for TYPO3 allows XSS by a backend user account.
The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.
Link | Tags |
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https://typo3.org/security/advisory/typo3-ext-sa-2021-004 | third party advisory patch |