CVE-2026-70376
Pluck CMS: CSRF via Spoofable Missing-Referer Bypass Leads to Stored XSS and RCE
Pluck CMS's admin panel relies solely on a Referer-header comparison (requestedByTheSameDomain() in data/inc/functions.admin.php, gating every admin.php action) for CSRF protection, with no per-request anti-CSRF token anywhere in the admin area. When a request carries no Referer/Host information, the function's elseif branch returns true, treating the request as same-origin. Because a cross-site attacker page can suppress the Referer header (e.g. via <meta name=referrer content=no-referrer>), it can force an authenticated administrator's browser to submit forged admin actions with no valid Referer, including creating pages with raw HTML (stored XSS via the rendered page) and installing PHP modules/themes (remote code execution).
| CWE | CWE-352 |
| Vendor | pluck-cms |
| Product | pluck cms |
| Published | Aug 5, 2026 |
Get instant alerts for pluck-cms pluck cms
Be the first to know when new critical vulnerabilities affecting pluck-cms pluck cms are published — delivered to Slack, Telegram or Discord.
CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H