PyPi: Wagtail

CVE-2021-29434

Safety vulnerability ID: 40230

This vulnerability was reviewed by experts

The information on this page was manually curated by our Cybersecurity Intelligence Team.

Created at Apr 19, 2021 Updated at Feb 21, 2025
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Advisory

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). See CVE-2021-29434.

Affected package

wagtail

Latest version: 6.4.1

A Django content management system.

Affected versions

Fixed versions

Vulnerability changelog

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). See CVE-2021-29434.


CONFIRM:https://github.com/wagtail/wagtail/security/advisories/GHSA-wq5h-f9p5-q7fx: https://github.com/wagtail/wagtail/security/advisories/GHSA-wq5h-f9p5-q7fx
MISC:https://pypi.org/project/wagtail/: https://pypi.org/project/wagtail/

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Severity Details

CVSS Base Score

MEDIUM 4.8

CVSS v3 Details

MEDIUM 4.8
Attack Vector (AV)
NETWORK
Attack Complexity (AC)
LOW
Privileges Required (PR)
HIGH
User Interaction (UI)
REQUIRED
Scope (S)
CHANGED
Confidentiality Impact (C)
LOW
Integrity Impact (I)
LOW
Availability Availability (A)
NONE

CVSS v2 Details

LOW 3.5
Access Vector (AV)
NETWORK
Access Complexity (AC)
MEDIUM
Authentication (Au)
SINGLE
Confidentiality Impact (C)
NONE
Integrity Impact (I)
PARTIAL
Availability Impact (A)
NONE