CVE-2026-70376: Pluck CMS - CSRF via Spoofable Missing-Referer Bypass Leads to Stored XSS and RCE

Severity: critical (CVSS 9.6 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-08-05 · updated 2026-10-24
Weakness: CWE-352

Description

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.

Affected products

pluck-cms Pluck CMS: through 4.7.21

References

https://github.com/pluck-cms/pluck

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