Unauthorized Access in Drupal Webform REST <=4.1.0 Allows Forceful Browsing
CVE-2026-16644 Published on August 25, 2026

Webform REST - Moderately critical - Access bypass - SA-CONTRIB-2026-087
Incorrect Authorization vulnerability in Drupal Webform REST allows Forceful Browsing. This issue affects Webform REST versions: from 0.0.0 to 4.1.0.

NVD

Vulnerability Analysis

CVE-2026-16644 is exploitable with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have a high impact on confidentiality and integrity, and no impact on availability.

Attack Vector:
NETWORK
Attack Complexity:
LOW
Privileges Required:
NONE
User Interaction:
NONE
Scope:
UNCHANGED
Confidentiality Impact:
HIGH
Integrity Impact:
HIGH
Availability Impact:
NONE

Weakness Type

What is an AuthZ Vulnerability?

The software performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check. This allows attackers to bypass intended access restrictions.

CVE-2026-16644 has been classified to as an AuthZ vulnerability or weakness.


Affected Versions

Drupal Webform REST: