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- ============================
- Wagtail 2.11.7 release notes
- ============================
- .. contents::
- :local:
- :depth: 1
- What's new
- ==========
- CVE-2021-29434: Improper validation of URLs ('Cross-site Scripting') in rich text fields
- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
- This release addresses a cross-site scripting (XSS) vulnerability in rich text fields. When saving the contents of a rich text field in the admin interface, Wagtail did not apply server-side checks to ensure that link URLs use a valid protocol. A malicious user with access to the admin interface could thus craft a POST request to publish content with javascript: URLs containing arbitrary code. The vulnerability is not exploitable by an ordinary site visitor without access to the Wagtail admin.
- Many thanks to Kevin Breen for reporting this issue.
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