Skip to content

Possible XSS attack in Wagtail

Moderate severity GitHub Reviewed Published Apr 14, 2020 in wagtail/wagtail • Updated Jan 9, 2023

Package

pip wagtail (pip)

Affected versions

>= 1.9.0, < 2.7.2
= 2.8.0

Patched versions

2.7.2
2.8.1

Description

Impact

A cross-site scripting (XSS) vulnerability exists on the page revision comparison view within the Wagtail admin interface. A user with a limited-permission editor account for the Wagtail admin could potentially craft a page revision history that, when viewed by a user with higher privileges, could perform actions with that user's credentials. The vulnerability is not exploitable by an ordinary site visitor without access to the Wagtail admin.

Patches

Patched versions have been released as Wagtail 2.7.2 (for the LTS 2.7 branch) and Wagtail 2.8.1 (for the current 2.8 branch).

Workarounds

Site owners who are unable to upgrade to the new versions can disable the revision comparison view by adding the following URL route to the top of their project's urls.py configuration:

from django.views.generic.base import RedirectView

urlpatterns = [
    url(r'^admin/pages/(\d+)/revisions/compare/', RedirectView.as_view(url='/admin/')),
    # ...
]

Acknowledgements

Many thanks to Vlad Gerasimenko for reporting this issue.

For more information

If you have any questions or comments about this advisory:

References

@gasman gasman published to wagtail/wagtail Apr 14, 2020
Reviewed Apr 14, 2020
Published to the GitHub Advisory Database Apr 14, 2020
Last updated Jan 9, 2023

Severity

Moderate

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
High
Privileges required
Low
User interaction
Required
Scope
Changed
Confidentiality
High
Integrity
None
Availability
None

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:N/A:N

EPSS score

0.091%
(40th percentile)

Weaknesses

CVE ID

CVE-2020-11001

GHSA ID

GHSA-v2wc-pfq2-5cm6

Source code

No known source code
Loading Checking history
See something to contribute? Suggest improvements for this vulnerability.