CVE-2026-109307
Craft CMS 5.0.0 before 5.10.14 DOM XSS via returnUrl in 2FA Verification
- State
- Published
- Severity
- 2.1 Low
- Published
- Oct 12, 2026
- Updated
- Oct 15, 2026
- Reserved
- Oct 12, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 2.1 Low | CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N | VulnCheck |
| 3.1 | 4.7 Medium | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N | VulnCheck |
Weaknesses
- CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Products
| Product | Versions |
|---|---|
cmscraftcms |
|
References
- GitHub Security Advisory (GHSA-w5rh-mhxj-wr8r)vendor-advisory
- VulnCheck Advisory: Craft CMS 5.0.0 before 5.10.14 DOM XSS via returnUrl in 2FA Verificationthird-party-advisory
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