CVE-2020-12648

MEDIUM6.1EPSS 0.28%

Cross-site scripting vulnerability in TinyMCE

發布日:2020/8/11修改日:2023/11/8

描述

### Impact A cross-site scripting (XSS) vulnerability was discovered in the core parser. The vulnerability allowed arbitrary JavaScript execution when inserting a specially crafted piece of content into the editor via the clipboard or APIs. This impacts all users who are using TinyMCE 4.9.10 or lower and TinyMCE 5.4.0 or lower. ### Patches This vulnerability has been patched in TinyMCE 4.9.11 and 5.4.1 by improved HTML parsing and sanitization logic. ### Workarounds The workarounds available are: - upgrade to either TinyMCE 4.9.11 or TinyMCE 5.4.1 or - enable the media plugin, which overrides the default parsing behaviour for iframes or - add the following workaround to update the parsing schema rules for iframes: #### Example: Change the default schema for iframes ```js setup: function(editor) { editor.on('PreInit', function() { editor.schema.getSpecialElements()['iframe'] = /</iframe[^>]*>/gi; }); } ``` ### Acknowledgements Tiny Technologies would like to thank George Steketee and Chris Davis at [Bishop Fox](https://www.bishopfox.com/) for discovering this vulnerability. ### References https://www.tiny.cloud/docs/release-notes/release-notes54/#securityfixes ### For more information If you have any questions or comments about this advisory: * Open an issue in the [TinyMCE repo](https://github.com/tinymce/tinymce/issues) * Email us at [[email protected]](mailto:[email protected])

受影響套件(1)

npm/tinymcefrom 0, < 4.9.11

CVSS 分數

來源	版本	嚴重程度	向量
osv	CVSS 3.1	MEDIUM6.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

描述

受影響套件(1)

CVSS 分數

參考連結(6)