CVE-2026-6451 | CMS für Motorrad Werkstätten <= 1.0.0 - Cross-Site Request Forgery

The cms-fuer-motorrad-werkstaetten plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to and including 1.0.0. This is due to missing nonce validation on all eight AJAX deletion handlers: vehicles_cfmw_d_vehicle, contacts_cfmw_d_contact, suppliers_cfmw_d_supplier, receipts_cfmw_d_receipt, positions_cfmw_d_position, catalogs_cfmw_d_article, stock_cfmw_d_item, and settings_cfmw_d_catalog. None of these handlers call check_ajax_referer() or wp_verify_nonce(), nor do they perform any capability checks via current_user_can(). This makes it possible for unauthenticated attackers to delete arbitrary vehicles, contacts, suppliers, receipts, positions, catalog articles, stock items, or entire supplier catalogs via a forged request, provided they can trick a logged-in user into performing an action such as clicking a link to a malicious page.

Published: 2026-04-17 Last update: 2026-06-17 Assigner: [email protected] Source: [email protected]

Conclusion & alert: CVE-2026-6451 is rated Low Risk (21.9/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.22%). Mandatory action: Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2026-6451

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.01% 0.22% +0.22%
2 2026-04-17 0.01%

Full EPSS history (2 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2026-6451

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
4.3 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:L)
Attackers could change some data, but it’s limited—not everything goes.
Availability (A:N)
Service keeps running; no real outage angle.
2.8 1.4 [email protected]

Weakness enumeration for CVE-2026-6451

GitHub Security Advisory for CVE-2026-6451

GHSA-8mf7-m4px-v9qq · Severity: medium — The cms-fuer-motorrad-werkstaetten plugin for WordPress is vulnerable to Cross-Site Request...

Affected software / configurations for CVE-2026-6451

Vendor Product Version Raw CPE
No affected products in dataset.

References for CVE-2026-6451

URL Tags
https://plugins.trac.wordpress.org/browser/cms-fuer-motorrad-werkstaetten/tags/1.0.0/includes/cfmw-catalogs.php#L88
https://plugins.trac.wordpress.org/browser/cms-fuer-motorrad-werkstaetten/tags/1.0.0/includes/cfmw-contacts.php#L93
https://plugins.trac.wordpress.org/browser/cms-fuer-motorrad-werkstaetten/tags/1.0.0/includes/cfmw-positions.php#L119
https://plugins.trac.wordpress.org/browser/cms-fuer-motorrad-werkstaetten/tags/1.0.0/includes/cfmw-receipts.php#L92
https://plugins.trac.wordpress.org/browser/cms-fuer-motorrad-werkstaetten/tags/1.0.0/includes/cfmw-settings.php#L191
https://plugins.trac.wordpress.org/browser/cms-fuer-motorrad-werkstaetten/tags/1.0.0/includes/cfmw-stock.php#L101
https://plugins.trac.wordpress.org/browser/cms-fuer-motorrad-werkstaetten/tags/1.0.0/includes/cfmw-suppliers.php#L108
https://plugins.trac.wordpress.org/browser/cms-fuer-motorrad-werkstaetten/tags/1.0.0/includes/cfmw-vehicles.php#L100
https://plugins.trac.wordpress.org/browser/cms-fuer-motorrad-werkstaetten/tags/1.0.0/includes/cfmw-vehicles.php#L98
https://plugins.trac.wordpress.org/browser/cms-fuer-motorrad-werkstaetten/trunk/includes/cfmw-catalogs.php#L88
https://plugins.trac.wordpress.org/browser/cms-fuer-motorrad-werkstaetten/trunk/includes/cfmw-contacts.php#L93
https://plugins.trac.wordpress.org/browser/cms-fuer-motorrad-werkstaetten/trunk/includes/cfmw-positions.php#L119
https://plugins.trac.wordpress.org/browser/cms-fuer-motorrad-werkstaetten/trunk/includes/cfmw-receipts.php#L92
https://plugins.trac.wordpress.org/browser/cms-fuer-motorrad-werkstaetten/trunk/includes/cfmw-settings.php#L191
https://plugins.trac.wordpress.org/browser/cms-fuer-motorrad-werkstaetten/trunk/includes/cfmw-stock.php#L101
https://plugins.trac.wordpress.org/browser/cms-fuer-motorrad-werkstaetten/trunk/includes/cfmw-suppliers.php#L108
https://plugins.trac.wordpress.org/browser/cms-fuer-motorrad-werkstaetten/trunk/includes/cfmw-vehicles.php#L100
https://plugins.trac.wordpress.org/browser/cms-fuer-motorrad-werkstaetten/trunk/includes/cfmw-vehicles.php#L98
https://www.wordfence.com/threat-intel/vulnerabilities/id/6895a774-7e78-4ab2-a2b3-2a333f258778?source=cve
cvelogic Threat Intelligence