WooCommerce Komfortkasse Plugin Bypasses Nonce Verification

The Komfortkasse for WooCommerce WordPress plugin before 1.4.9 does not properly validate the authenticity of REST API requests, overriding WordPress's own nonce verification so that a request forged in a logged-in administrator's browser is accepted, which can be used to create a new administrator account and fully take over the site.

Casky was already ahead

This CVE exploits attack patterns that Casky's 323matched skills already investigate — long before this vulnerability was disclosed. Claude's reasoning model maps these techniques to MITRE ATT&CK, so practitioners who ran these skills have already seen the threat behaviour in their findings.

Analysis

CVE-2026-122001 represents a critical authentication bypass vulnerability in the Komfortkasse for WooCommerce plugin that affects WordPress sites running versions before 1.4.9. The plugin improperly validates REST API requests by overriding WordPress's built-in nonce verification mechanism, a security control designed to prevent Cross-Site Request Forgery (CSRF) attacks. This flaw allows attackers to forge requests that appear legitimate when executed in an authenticated administrator's browser context, enabling unauthorized actions without the administrator's knowledge or consent. Any WordPress site using this plugin is at risk of complete compromise, as attackers can leverage this vulnerability to create new administrator accounts and gain full control over the website, its data, and hosted content.

Casky's skill mapping identifies this vulnerability across 323 security techniques, with primary focus on TA0001 (Initial Access) and TA0043 (Reconnaissance) from MITRE ATT&CK. Practitioners using Casky's Claude-powered analysis would detect attack patterns including: forged API requests lacking proper authentication tokens, suspicious administrator account creation events in WordPress logs, REST API endpoints bypassing standard nonce validation checks, and lateral movement indicators following successful authentication bypass. The extended reasoning capabilities would correlate these findings across multiple data sources—identifying abnormal API call patterns, privilege escalation sequences, and account creation chains that deviate from normal administrative behavior. Security teams would receive specific alerts on CWE-352 violations, enabling them to distinguish legitimate REST API activity from exploitation attempts and prioritize patching this plugin version immediately.

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Casky Risk Score

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EPSS Probability

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Shodan Exposure

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GreyNoise Signal

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Composite risk scoring from EPSS, CISA KEV, Shodan, and GreyNoise — 21 security APIs correlated into a single Casky Risk Score. Coming in Casky Pro. Join early access →

323 Casky skills cover this attack pattern

These skills use Claude AI's reasoning model to surface findings in the same attack categories as CVE-2026-122001.

Abuse of Public-Facing API: Mobile API Abuse

mobile security · low

Run

abusing-dpapi-for-credential-access

red teaming · high

Run

abusing-shadow-credentials-for-privesc

red teaming · high

Run

MITRE ATT&CK Techniques

TA0001 TA0043

Investigate the attack patterns behind CVE-2026-122001

Casky has 323 skills that investigate the attack patterns behind CVE-2026-122001. Run one and get CVSS-scored findings in 3 minutes.

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