CVE-2026-109307CWE-79cross-site-scripting

CVE-2026-109307

Medium · published October 12, 2026

CVSS v3.1
4.7
EPSS
0%
Percentile
7.7
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
4.7 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N
CVSS v4.0
2.1 · 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
EPSS
0.00185 · 7.7th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2026-10-12T21:17Z
References (2)
https://github.com/craftcms/cms/security/advisories/GHSA-w5rh-mhxj-wr8r · [email protected]https://www.vulncheck.com/advisories/craft-cms-5.0.0-before-5.10.14-dom-xss-via-returnurl-in-2fa-verification · [email protected]
EPSS history
Timeline
  • 14 OCT 03:27Z
    EPSS moved — → 0%
    epss
  • 12 OCT 16:05Z
    Craft CMS 5.0.0 before 5.10.14 DOM XSS via returnUrl in 2FA Verification
    cvelistv5
  • 12 OCT 16:05Z
    Craft CMS 5.0.0 before 5.10.14 DOM XSS via returnUrl in 2FA Verification
    cvelistv5