Wagtail up to 6.3.7/7.0.5/7.2.2/7.3.0 wagtail.contrib.simple_translation cross site scripting

Summaryinfo

A vulnerability, which was classified as problematic, was found in Wagtail up to 6.3.7/7.0.5/7.2.2/7.3.0. Affected is an unknown function of the component wagtail.contrib.simple_translation. The manipulation results in cross site scripting. This vulnerability is known as CVE-2026-28223. It is possible to launch the attack remotely. No exploit is available. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in Wagtail up to 6.3.7/7.0.5/7.2.2/7.3.0. It has been classified as problematic. Affected is some unknown functionality of the component wagtail.contrib.simple_translation. The manipulation with an unknown input leads to a cross site scripting vulnerability. CWE is classifying the issue as CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. This is going to have an impact on integrity. CVE summarizes:

Wagtail is an open source content management system built on Django. Prior to versions 6.3.8, 7.0.6, 7.2.3, and 7.3.1, a stored cross-site scripting (XSS) vulnerability exists on confirmation messages within the wagtail.contrib.simple_translation module. A user with access to the Wagtail admin area may create a page with a specially-crafted title which, when another user performs the "Translate" action, causes arbitrary JavaScript code to run. This could lead to performing actions with that user's credentials. The vulnerability is not exploitable by an ordinary site visitor without access to the Wagtail admin. This issue has been patched in versions 6.3.8, 7.0.6, 7.2.3, and 7.3.1.

The advisory is shared for download at github.com. This vulnerability is traded as CVE-2026-28223 since 02/25/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation requires an enhanced level of successful authentication. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1059.007.

Upgrading to version 6.3.8, 7.0.6, 7.2.3 or 7.3.1 eliminates this vulnerability.

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Productinfo

Name

• Wagtail

Version

• 6.3.0
• 6.3.1
• 6.3.2
• 6.3.3
• 6.3.4
• 6.3.5
• 6.3.6
• 6.3.7
• 7.0
• 7.0.0
• 7.0.1
• 7.0.2
• 7.0.3
• 7.0.4
• 7.0.5
• 7.1
• 7.2
• 7.2.0
• 7.2.1
• 7.2.2
• 7.3.0

Website

• Product: https://github.com/wagtail/wagtail/

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