CVE-2026-123819 Wagtail: Improper permission handling when copying snippets
- Exploited in the wild
- Not known
- Fix
- Available
What is CVE-2026-123819?
CVE-2026-123819 is a medium-severity vulnerability in wagtail, published on 9 Nov 2026.
Official description
Wagtail is an open source content management system built on Django. Prior to 7.0.9, 7.3.4, 7.4.3, and 8.0rc2, a CMS user who has add permission for a snippet model but lacks change and view permission for an existing snippet can access the snippet copy view and copy that source object. The copy operation reveals the contents of a snippet that the user is not authorized to view. This issue is fixed in versions 7.0.9, 7.3.4, 7.4.3, and 8.0rc2.
Weakness: CWE-280
Which versions are affected by CVE-2026-123819?
4 open source packages ship an affected version, including wagtail.
| Package | Affected | Fixed in |
|---|---|---|
wagtail PyPI | All versions | 7.0.9 |
wagtail PyPI | From 7.1 | 7.3.4 |
wagtail PyPI | From 7.4 | 7.4.3 |
wagtail PyPI | From 8.0rc1 | 8.0rc2 |
How do I fix CVE-2026-123819?
Upgrade wagtail to a fixed version for your release line: 7.0.9, 7.3.4, 7.4.3 or 8.0rc2.
Is CVE-2026-123819 being exploited?
There is no known exploitation of CVE-2026-123819 in the wild and no public exploit code.
Sources
Also known as GHSA-x5cx-w6p2-mxf2.