WordPress Real Estate Plugin Stored XSS via Unescaped Input

The Real Estate Manager – Property Listing and Agent Management plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'first_name' parameter in all versions up to, and including, 7.3 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The reCAPTCHA check is trivially bypassed by omitting the g-recaptcha-response parameter entirely, since validation only runs when that parameter is present.

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

The Real Estate Manager plugin for WordPress contains a stored cross-site scripting (XSS) vulnerability in the 'first_name' parameter due to insufficient input sanitization and output escaping. This vulnerability allows unauthenticated attackers to inject malicious JavaScript that persists in the database and executes whenever any user accesses pages containing the injected payload. WordPress site administrators and users of this plugin across all versions up to 7.3 are at risk, as the trivially bypassed reCAPTCHA protection provides no meaningful defense against automated exploitation. The stored nature of this XSS means the attack is particularly dangerous—attackers can compromise entire user sessions, steal credentials, deface content, or redirect users to malicious sites without requiring direct user interaction beyond normal site browsing.

Casky's 323 matched skills leverage Claude AI with extended reasoning to detect the attack patterns mapping to MITRE ATT&CK techniques TA0001 (Initial Access) and TA0043 (Reconnaissance). Practitioners using Casky would observe detection of CWE-79 violation patterns through analysis of parameter handling flows, identifying where user input from 'first_name' bypasses sanitization functions and reaches output contexts without proper escaping. The platform's skills would flag the absence of WordPress security functions like sanitize_text_field() on input and esc_html() on output, combined with the reCAPTCHA bypass technique (parameter omission). Analysts would see correlated findings showing how unauthenticated access to the vulnerable endpoint enables reconnaissance and initial access chains, allowing attackers to establish persistent footholds before privilege escalation or lateral movement.

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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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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-2026-96667.

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-2026-96667

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