CVE-2021-29434
A malicious user with access to the admin interface could thus craft a POST request to publish content with `javascript:` URLs containing arbitrary code.
Does this matter?
Lower severity and a low EPSS score (0.63%). Track it; it rarely justifies an emergency change on its own.
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).
- CVSS 3.1
- 4.8 MEDIUMCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
- EPSS
- 0.63% probability · 48th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-79
- Affected
- torchbox/wagtail
- Source
- security-advisories@github.com
References
- https://github.com/wagtail/wagtail/security/advisories/GHSA-wq5h-f9p5-q7fxMitigation, Third Party Advisory
- https://pypi.org/project/wagtail/Product, Third Party Advisory
- https://github.com/wagtail/wagtail/security/advisories/GHSA-wq5h-f9p5-q7fxMitigation, Third Party Advisory
- https://pypi.org/project/wagtail/Product, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.