Reflected XSS in Fox-themes Prague Plugin Versions

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Fox-themes Prague allows Reflected XSS. This issue affects Prague: from n/a through 2.2.8.

Casky was already ahead

This CVE exploits attack patterns that Casky's 301matched 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-2025-15654 is a Reflected Cross-Site Scripting (XSS) vulnerability in the Fox-themes Prague plugin affecting versions through 2.2.8. This CWE-79 vulnerability allows attackers to inject malicious scripts into web pages viewed by victims, potentially compromising user sessions, stealing credentials, or delivering malware. Organizations running WordPress sites with Prague versions 2.2.8 or earlier are immediately at risk, particularly those lacking input validation and output encoding mechanisms on user-supplied data. While not yet in CISA's Known Exploited Vulnerabilities catalog, reflected XSS vulnerabilities are frequently weaponized in targeted phishing campaigns and watering hole attacks.

Casky's 301 mapped skills leverage Claude AI with extended reasoning to detect the attack patterns underlying this vulnerability across MITRE ATT&CK techniques TA0001 (Reconnaissance) and TA0043 (Reconnaissance). Practitioners using Casky will identify suspicious patterns such as: unencoded user input in HTTP responses (TA0001 - gathering information about input validation weaknesses), malicious script injection attempts in GET/POST parameters, and DOM manipulation targeting Prague's rendering pipeline. The platform's skill coverage enables detection of payload variations—from basic `<script>alert()</script>` to obfuscated Unicode and event handler exploits—by analyzing how Prague processes and neutralizes (or fails to neutralize) user-controlled data before page generation. Security teams gain visibility into both the reconnaissance phase where attackers probe for vulnerable parameters and the execution phase where payloads are delivered to end users.

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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 →

301 Casky skills cover this attack pattern

These skills use Claude AI's reasoning model to surface findings in the same attack categories as CVE-2025-15654.

analyzing-apt-group-with-mitre-navigator

threat intelligence · low

Run

analyzing-campaign-attribution-evidence

threat intelligence · low

Run

analyzing-certificate-transparency-for-phishing

threat intelligence · low

Run

MITRE ATT&CK Techniques

TA0001 TA0043

Investigate the attack patterns behind CVE-2025-15654

Casky has 301 skills that investigate the attack patterns behind CVE-2025-15654. Run one and get CVSS-scored findings in 3 minutes.

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