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CVE-2021-29434PYSEC-2021-114GHSA-WQ5H-F9P5-Q7FX

Improper validation of URLs ('Cross-site Scripting') in Wagtail rich text fields

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 2.11.7, 2.11.6, 2.12.4
None on Exploit-DB, Metasploit or GitHub

Summary

Wagtail is a Django content management system. In affected versions of Wagtail, when saving the contents of a rich text field in the admin interface, Wagtail does 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. See referenced GitHub advisory for additional details, including a workaround. Patched versions have been released as Wagtail 2.11.7 (for the LTS 2.11 branch) and Wagtail 2.12.4 (for the current 2.12 branch).

Timeline

  1. CVE published
  2. Record last updated

Affected versions

  • wagtail wagtail

    through 2.11.6; From 2.12 · through 2.12.3

  • wagtailPyPI

    From 2.11 · fixed in 2.11.7; fixed in 2.11.6; From 2.12 · fixed in 2.12.4

  • wagtailPyPI

    fixed in 2.11.7

  • wagtailPyPI

    From 2.12 · fixed in 2.12.4

References 2

GitHub · wagtail/wagtail

pypi.org