CVE-2026-84793

Medium

Description

Craft CMS versions from 5.0.0-RC1 before 5.10.11 contain a stored cross-site scripting vulnerability in the site name field that fails to sanitize input. Administrators can inject arbitrary JavaScript payloads in the site name that execute when other users view the control panel settings pages.

SeverityMedium

CVSS4.8

Exploit probability—

ProductCms

PublishedSep 2, 2026

First seenSep 2, 2026

Weakness typeCWE-79Cross-site scripting (XSS)

How to fix

Update

craftcms cms5.10.11 or later

Vendor advisories

github.com/craftcms/cms/security/advisories/GHSA-5fjj-496j-2qqf

Affected products

Product	Affected versions	Fixed in
craftcms cms	5.0.0-RC1 ≤ v < 5.10.11	5.10.11

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