CVE-2026-81168

Analyzed Analyzed - Analysis Complete

Authentication Bypass in Drupal CAPTCHA Protected Page

Publication date: 2026-09-02

Last updated on: 2026-09-09

Assigner: Drupal.org

Description

Authentication Bypass Using an Alternate Path or Channel vulnerability in Drupal CAPTCHA Protected Page allows Functionality Bypass. This issue affects CAPTCHA Protected Page versions: from 0.0.0 to 1.0.2.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-09-02

Last Modified

2026-09-09

Generated

2026-09-15

AI Q&A

2026-09-02

EPSS Evaluated

2026-09-14

NVD

CVE-2026-81168

EUVD

EUVD-2026-70006

Affected Vendors & Products

Vendor	Product	Version / Range
captcha_protected_page_project	captcha_protected_page	to 1.0.2 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-288	The product requires authentication, but the product has an alternate path or channel that does not require authentication.

Attack-Flow Graph

Executive Summary

This vulnerability is an Authentication Bypass Using an Alternate Path or Channel in Drupal CAPTCHA Protected Page. It allows attackers to bypass authentication mechanisms, enabling functionality bypass in versions from 0.0.0 to 1.0.2.

Detection Guidance

To detect this vulnerability, check if your Drupal site uses CAPTCHA Protected Page versions 0.0.0 to 1.0.2. Inspect the module version in the Drupal admin panel or via database queries. No specific commands are provided in the context.

Impact Analysis

An attacker could exploit this to bypass CAPTCHA protections, potentially gaining unauthorized access to protected pages or performing actions without proper authentication.

Compliance Impact

This vulnerability allows bypassing authentication on CAPTCHA-protected pages in Drupal, which could lead to unauthorized access to sensitive data. This may violate compliance requirements under GDPR (data protection) and HIPAA (health information security) by exposing protected information without proper controls.

Mitigation Strategies

Update the Drupal CAPTCHA Protected Page module to the latest version beyond 1.0.2 to address the authentication bypass vulnerability.

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