CVE-2021-29434
Improper validation of URLs ('Cross-site Scripting') in Wagtail rich text fields
- State
- Published
- Severity
- 6.1 Medium
- Published
- Apr 19, 2021
- Updated
- Aug 3, 2024
- Reserved
- Mar 30, 2021
Description
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).
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 6.1 Medium | CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:N | GitHub_M |
Weaknesses
- CWE-79 {"CWE-79":"Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')"}
Affected Products
| Product | Versions |
|---|---|
wagtailwagtail |
|
References
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