CVE-2026-15916

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Missing Authorization in Drupal Core Allows Forceful Browsing

Publication date: 2026-08-25

Last updated on: 2026-08-28

Assigner: Drupal.org

Description

Missing Authorization vulnerability in Drupal Drupal core allows Forceful Browsing. This issue affects Drupal core versions: from 0.0.0 to 10.6.13, from 11.3.0 to 11.3.14, from 11.4.0 to 11.4.4, from 0.0.0 to 11.0.*, from 0.0.0 to 11.1.*, from 0.0.0 to 11.2.*.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-08-25

Last Modified

2026-08-28

Generated

2026-09-15

AI Q&A

2026-08-26

EPSS Evaluated

2026-09-13

NVD

CVE-2026-15916

EUVD

EUVD-2026-66185

Affected Vendors & Products

Vendor	Product	Version / Range
drupal	drupal_core	From 0.0.0 (inc) to 10.6.13 (inc)
drupal	drupal_core	From 11.3.0 (inc) to 11.3.14 (inc)
drupal	drupal_core	From 11.4.0 (inc) to 11.4.4 (inc)
drupal	drupal_core	From 0.0.0 (inc) to 11.0.* (inc)
drupal	drupal_core	From 0.0.0 (inc) to 11.1.* (inc)
drupal	drupal_core	From 0.0.0 (inc) to 11.2.* (inc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-862	The product does not perform an authorization check when an actor attempts to access a resource or perform an action.

Attack-Flow Graph

Executive Summary

This is a Missing Authorization vulnerability in Drupal core that allows Forceful Browsing. This means attackers can access restricted pages or functions without proper permissions by directly manipulating URLs or requests.

Detection Guidance

This vulnerability involves missing authorization checks in Drupal core, allowing forceful browsing. To detect it, inspect Drupal core versions against affected ranges (0.0.0 to 10.6.13, 11.3.0 to 11.3.14, etc.). Check Drupal logs for unauthorized access attempts or unusual browsing patterns. Use commands like 'drush status' to verify Drupal version and 'grep' to search for suspicious access logs in web server files.

Impact Analysis

An attacker could exploit this to view, modify, or delete sensitive data, escalate privileges, or perform unauthorized actions on your Drupal site. This could lead to data breaches, defacement, or complete site compromise.

Compliance Impact

This vulnerability could lead to non-compliance with GDPR, HIPAA, or other regulations by exposing personal or sensitive data. Organizations may face fines, legal penalties, or reputational damage if exploited.

Mitigation Strategies

Update Drupal core to the latest version to address the missing authorization vulnerability. Check installed versions against affected ranges (0.0.0 to 10.6.13, 11.3.0 to 11.3.14, 11.4.0 to 11.4.4, 11.0.*, 11.1.*, 11.2.*).

Review access logs for unauthorized access attempts or forceful browsing activities targeting sensitive paths.

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