WordPress Plugin Privilege Escalation via Unrestricted Role Settings

The MultiVendorX WordPress plugin before 5.0.16 does not restrict who can update its role and capability settings, allowing users holding its vendor role to grant that role administrator-level capabilities and take over the site.

Casky was already ahead

This CVE exploits attack patterns that Casky's 224matched 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

The MultiVendorX WordPress plugin before version 5.0.16 contains a critical privilege escalation vulnerability where inadequate access controls on role and capability management functions allow vendor-level users to elevate themselves to administrator privileges. This vulnerability is particularly dangerous because it bypasses WordPress's native role-based access control (RBAC) system—the primary security boundary protecting WordPress installations. Any website running the affected plugin version with vendor users present faces immediate risk of complete site compromise, as attackers can pivot from limited vendor accounts to full administrative control without requiring additional credentials or exploits.

Casky's 224 mapped security skills leverage Claude AI's extended reasoning to detect the privilege escalation patterns associated with MITRE ATT&CK technique TA0004 (Privilege Escalation). Practitioners using Casky would identify suspicious activity patterns including: unauthorized modifications to WordPress role definitions, capability assignments that bypass standard permission hierarchies, and database queries manipulating user metadata in unexpected ways. The platform's skills would flag scenarios where vendor-role users execute admin-level functions, detect attempts to call role-modification functions without proper authorization checks, and correlate changes in user capabilities with subsequent administrative actions. By mapping these behavioral indicators to CWE-269 (Improper Access Control), Casky enables security teams to spot both active exploitation attempts and post-compromise indicators where attackers have already escalated privileges through this vector.

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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 →

224 Casky skills cover this attack pattern

These skills use Claude AI's reasoning model to surface findings in the same attack categories as CVE-2026-74925.

abusing-dpapi-for-credential-access

red teaming · high

Run

abusing-shadow-credentials-for-privesc

red teaming · high

Run

Access with Stolen Session Cookie

identity access management · low

Run

MITRE ATT&CK Techniques

TA0004

Investigate the attack patterns behind CVE-2026-74925

Casky has 224 skills that investigate the attack patterns behind CVE-2026-74925. Run one and get CVSS-scored findings in 3 minutes.

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