Unauthenticated WordPress Options Manipulation via JSON Plugin

The JSON Options WordPress plugin through 0.0.4 does not have any capability check or nonce verification on one of its actions, which runs on every request and is available to unauthenticated users, allowing them to update arbitrary WordPress options. This can be leveraged to enable user registration and set the default role to administrator, leading to privilege escalation and full site takeover.

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 JSON Options WordPress plugin through version 0.0.4 contains a critical privilege escalation vulnerability that allows unauthenticated attackers to modify arbitrary WordPress options without capability checks or nonce verification. The vulnerability stems from an action hook that executes on every request and is accessible to anonymous users, creating a direct pathway to administrative access. Any WordPress site running the affected plugin version is at immediate risk of complete site takeover, as attackers can enable user registration and set the default role to administrator—effectively bypassing all authentication mechanisms and gaining full control over the installation, its data, and all connected systems.

Casky's 224 mapped skills leverage Claude's extended reasoning to detect the attack patterns underlying this vulnerability across TA0004 (Privilege Escalation) and related MITRE ATT&CK techniques. Practitioners would observe findings highlighting improper access control patterns (CWE-269), detection of missing authentication enforcement on sensitive WordPress actions, and reconnaissance of unauthenticated option-modification capabilities. The platform's security skills would flag abnormal option updates originating from unauthenticated sessions, detection of newly created administrator accounts with suspicious creation timestamps, and identification of modified registration settings that deviate from baseline configurations—enabling defenders to spot exploitation attempts and validate patch application across their WordPress infrastructure.

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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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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-2026-75860.

abusing-dpapi-for-credential-access

red teaming · high

Run

abusing-shadow-credentials-for-privesc

red teaming · high

Run

Access with Stolen Session Cookie

penetration testing · medium

Run

MITRE ATT&CK Techniques

TA0004

Investigate the attack patterns behind CVE-2026-75860

Casky has 224 skills that investigate the attack patterns behind CVE-2026-75860. Run one and get CVSS-scored findings in 3 minutes.

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