Is CVE-2026-123819 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-123819 being exploited in the wild.

How severe is CVE-2026-123819?

Medium severity, with a CVSS score of 6.5, published 9 November 2026.

Which products and versions are affected?

Wagtail Before 7.0.9, 7.3.4, 7.4.3, and 8.0rc2.

Is there a fix for CVE-2026-123819?

Yes: fixed in 7.0.9, 7.3.4, 7.4.3, 8.0rc2. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-123819 attacked?

It is attacked over the network, in a web application.

Am I affected by CVE-2026-123819?

Check whether you run Wagtail at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-123819: Wagtail snippet copy permission bypass

CVE-2026-123819 · Severity: medium · CVSS 6.5 · Published 2026-11-09

Wagtail is a Django-based content management system that manages website content through user roles and permissions. A CMS user with permission to create snippets but not view existing ones could bypass access controls by copying a snippet, revealing its contents. This allows unauthorized access to sensitive content such as reusable text, media, or configuration data that should be restricted.

Technologies: Wagtail. Vendors: Wagtail.

Quick answers

Is CVE-2026-123819 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-123819 being exploited in the wild.
How severe is CVE-2026-123819?: Medium severity, with a CVSS score of 6.5, published 9 November 2026.
Which products and versions are affected?: Wagtail Before 7.0.9, 7.3.4, 7.4.3, and 8.0rc2.
Is there a fix for CVE-2026-123819?: Yes: fixed in 7.0.9, 7.3.4, 7.4.3, 8.0rc2. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-123819 attacked?: It is attacked over the network, in a web application.
Am I affected by CVE-2026-123819?: Check whether you run Wagtail at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

Fixed in: 7.0.9, 7.3.4, 7.4.3, 8.0rc2

Technical details

The CopyViewMixin in Wagtail's admin views failed to validate view or change permissions on the source object before allowing a copy operation. An authenticated CMS user with add permission for a snippet model but lacking change and view permissions for a specific snippet instance could access the copy view and retrieve the snippet's full contents. The fix adds permission checks (user_has_any_permission_for_instance) in the get_object method to enforce change or view permission requirements.

Affected products

Wagtail Wagtail Before 7.0.9, 7.3.4, 7.4.3, and 8.0rc2

Timeline

2026-11-09: disclosed

References

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