CVE-2026-109307

Medium

Description

Craft CMS 5.0.0 before 5.10.14 contains a DOM-based cross-site scripting vulnerability in the control panel login and 2FA verification flow, where a user-controlled returnUrl accepting javascript: URLs is used in client-side navigation. Attackers can lure a 2FA-enabled victim into opening a crafted /admin/login?verify=1 URL between password submission and TOTP verification, executing JavaScript in the authenticated control panel with the victim's permissions.

SeverityMedium

CVSS4.7

Exploit probability—

ProductCms

PublishedOct 12, 2026

First seenOct 12, 2026

Weakness typeCWE-79Cross-site scripting (XSS)

How to fix

Update

craftcms cms5.10.14 or later

Vendor advisories

github.com/craftcms/cms/security/advisories/GHSA-w5rh-mhxj-wr8r

Affected products

Product	Affected versions	Fixed in
craftcms cms	5.0.0 ≤ v < 5.10.14	5.10.14

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