Medium

Wagtail: Improper restriction handling on Pages admin API

Disclosed: 20.08.2026
Updated: 11.10.2026 15:18

Impact

The internal Pages admin API incorrectly returns page fields without access control when they are declared in api_fields. A user with access to the Wagtail admin can use this API to fetch draft and live page fields’ contents that are part of api_fields on the base page model (title, slug, seo_title, search_description), as well as all custom fields declared in api_fields.

The vulnerability is not exploitable by an ordinary site visitor without access to the Wagtail admin.

Patches

Patched versions have been released as Wagtail 7.0.9, 7.3.4, 7.4.3 and 8.0rc2.

Workarounds

Site owners unable to upgrade can apply the fix by overriding the relevant method on PagesAdminAPIViewSet to patch all vulnerable admin API endpoints:

python

# wagtail_hooks.py or AppConfig.ready()

from wagtail.admin.api.views import PagesAdminAPIViewSet
from wagtail.permissions import page_permission_policy


def _restricted_get_base_queryset(self):
    return page_permission_policy.explorable_instances(self.request.user)

PagesAdminAPIViewSet.get_base_queryset = _restricted_get_base_queryset

Acknowledgements

Many thanks to xuliang@QAX for reporting this issue.

For more information

If you have any questions or comments about this advisory:

Visit Wagtail's support channels
Email us at security@wagtail.org (view our security policy for more information).

Affected software

Click a technology to see all vulnerabilities affecting it.

Platform	Package	Vulnerable versions	Fixed in
Python (PyPI)	wagtail	< 7.0.9, >= 7.1, < 7.3.4, >= 7.4, < 7.4.3, >= 8.0rc1, < 8.0rc2	7.0.9, 7.3.4, 7.4.3, 8.0rc2

References

CVSS score 4.3/10

CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Weakness (CWE): CWE-280
Platform: Python (PyPI)
Package: wagtail
Disclosed: 20.08.2026
Updated: 11.10.2026 15:18

Sources and licenses

OSV / GitHub Advisory Database - PYSEC-2026-3939 - PyPA Advisory Database; CC BY 4.0

OSV / GitHub Advisory Database - GHSA-3vrh-m9w7-v94f - CC BY 4.0

Vulnerability history: wagtail

All published vulnerabilities of this package (Python (PyPI)), newest first. Shows whether this is a one-off slip or a package that needs watching.

All (30) in the archive

Total entries: 30
First → latest: 04.2020 08.2026
Without a fix: 0
Exploited in attacks: 0

Severity breakdown

High 5
Medium 22
Low 3

Disclosures per year

2020: 3
2021: 2
2022: 1
2023: 3
2024: 3
2025: 0
2026: 18

20.08.2026

Wagtail: Improper restriction handling on Pages admin API this entry

Medium · 4.3 CVE-2026-55468 < 7.0.9, >= 7.1, < 7.3.4, >= 7.4, < 7.4.3, >= 8.0rc1, < 8.0rc2 7.0.9, 7.3.4, 7.4.3, 8.0rc2
01.07.2026

Wagtail: Reflected XSS in dynamic image URL generator view

High · 7.3 CVE-2026-54263 >= 7.3, < 7.3.3, >= 7.4, < 7.4.2 7.3.3, 7.4.2
11.07.2024

Wagtail regular expression denial-of-service via search query parsing

High · 6.5 CVE-2024-39317 >= 6.0, < 6.0.6, >= 6.1, < 6.1.3, >= 2.0, < 5.2.6 6.0.6, 6.1.3, 5.2.6
03.04.2023

Wagtail vulnerable to stored Cross-site Scripting attack via ModelAdmin views

High · 6.4 CVE-2023-28836 >= 1.5, < 4.1.4, >= 4.2, < 4.2.2 4.1.4, 4.2.2
19.04.2021

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

High · 6.1 CVE-2021-29434 < 2.11.7, >= 2.12, < 2.12.4 2.11.7, 2.12.4
20.07.2020

Cross-Site Scripting in Wagtail

High · 5.7 CVE-2020-15118 >= 2.8rc1, < 2.9.3, < 2.7.4 2.9.3, 2.7.4

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