CoCart Plugin Disables REST API Nonce Protection Globally

The CoCart WordPress plugin before 4.9.7 does not scope its REST API authentication filter to its own endpoints, which disables WordPress core's REST nonce protection for every route, allowing an attacker to perform a cross-site request forgery attack that creates a new administrator account using a logged-in administrator's session.

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-2026-93549 is a critical authentication bypass vulnerability in the CoCart WordPress plugin that disables WordPress's built-in REST API nonce protection across all endpoints, not just the plugin's own routes. This allows unauthenticated attackers to forge cross-site requests (CSRF) using a logged-in administrator's session to create new administrator accounts or perform other privileged actions. Any WordPress site running CoCart before version 4.9.7 is affected, making this particularly dangerous since WordPress plugins are ubiquitously deployed across millions of sites. The vulnerability exploits a common development mistake—applying security filters too broadly—with severe consequences for administrative access control.

Casky's 323 matching security skills leverage Claude's extended reasoning to detect the attack patterns mapped to MITRE ATT&CK techniques TA0001 (Reconnaissance) and TA0043 (Reconnaissance via suspicious REST API enumeration and authentication filter behavior). Practitioners using Casky would identify findings showing: (1) anomalous REST endpoint requests lacking valid nonce tokens across multiple routes (CWE-352 CSRF indicator), (2) authentication filter hooks applied at the WordPress core level rather than plugin-scoped endpoints, (3) unusual POST requests to admin-ajax.php or wp-json endpoints originating from external sites in referrer logs, and (4) new administrator account creation events preceded by cross-origin requests. The skill framework would correlate these signals to surface the root cause—overly broad nonce filter disabling—enabling rapid patching and session invalidation before exploitation occurs.

Live Threat IntelligenceComing soon

Casky Risk Score

—

EPSS Probability

—

Shodan Exposure

—

GreyNoise Signal

—

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-2026-93549.

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-2026-93549

Casky has 323 skills that investigate the attack patterns behind CVE-2026-93549. Run one and get CVSS-scored findings in 3 minutes.

Run the skill that detects this →

X Instagram LinkedIn