Описание
Cross-site scripting vulnerability in TinyMCE
Impact
A cross-site scripting (XSS) vulnerability was discovered in the URL sanitization logic of the core parser. The vulnerability allowed arbitrary JavaScript execution when inserting a specially crafted piece of content into the editor using the clipboard or APIs. This impacts all users who are using TinyMCE 5.5.1 or lower.
Patches
This vulnerability has been patched in TinyMCE 5.6.0 by improved URL sanitization logic.
Workarounds
To work around this vulnerability, either:
- Upgrade to TinyMCE 5.6.0 or higher
- Manually sanitize
iframe,objectandembedURL attributes using a TinyMCE node filter. - Disable
iframe,object, andembedelements in your content using the invalid_elements setting.
Example: Sanitizing using a node filter
Example: Using invalid_elements
Acknowledgements
Tiny Technologies would like to thank Aaron Bishop at SecurityMetrics for discovering this vulnerability.
References
https://www.tiny.cloud/docs/release-notes/release-notes56/#securityfixes
For more information
If you have any questions or comments about this advisory:
- Open an issue in the TinyMCE repo
- Email us at infosec@tiny.cloud
Пакеты
tinymce
< 5.6.0
5.6.0
TinyMCE
< 5.6.0
5.6.0
tinymce/tinymce
< 5.6.0
5.6.0
Связанные уязвимости
TinyMCE versions before 5.6.0 are affected by a stored cross-site scripting vulnerability. An unauthenticated and remote attacker could insert crafted HTML into the editor resulting in arbitrary JavaScript execution in another user's browser.
TinyMCE versions before 5.6.0 are affected by a stored cross-site scripting vulnerability. An unauthenticated and remote attacker could insert crafted HTML into the editor resulting in arbitrary JavaScript execution in another user's browser.
TinyMCE versions before 5.6.0 are affected by a stored cross-site scri ...