CVE-2026-28222

MEDIUM 6.1

Wagtail: Improper escaping of HTML (Cross-site Scripting) on TableBlock class attributes

CVSS Score

6.1

EPSS Score

0.0%

EPSS Percentile

0th

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 rendering TableBlock blocks within a StreamField. A user with access to create or edit pages containing TableBlock StreamField blocks is able to set specially-crafted class attributes on the block which run arbitrary JavaScript code when the page is viewed. When viewed by a user with higher privileges, 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, and only affects sites using TableBlock. This issue has been patched in versions 6.3.8, 7.0.6, 7.2.3, and 7.3.1.

CWE	CWE-79
Vendor	wagtail
Product	wagtail
Published	Mar 5, 2026
Last Updated	Mar 6, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

High

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

None

Affected Versions

wagtail / wagtail

< 6.3.8 >= 6.4rc1, < 7.0.6 >= 7.1rc1, < 7.2.3 >= 7.3rc1, < 7.3.1

References

NVD ↗ CVE.org ↗ EPSS Data ↗