Is there a patch available for CVE-2026-96391?

Yes, a patch is available for CVE-2026-96391. Update the affected software to the latest version immediately.

Webform Rest CVE-2026-96391

EUVD-2026-107815

Missing Authorization (CWE-862)

2026-10-22 drupal

GHSA-pp56-wg7c-j5hh

PHP Authentication Bypass Information Disclosure Drupal Webform Rest

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Vulnerability Assessment

Weakness

CWE

CWE-862

OWASP Top 10:2025

A01:2025 - Broken Access Control

ASVS 5.0

V8 - Authorization Authorization checks on every request

MITRE ATT&CK

1 technique across 1 tactic: Privilege Escalation

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

This Week Schedule remediation this week. Why: No CVSS yet + dangerous CWE (RCE/injection/auth-bypass class).

Patch available 0.2% exploitation probability (EPSS)

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AnalysisCVE.org

Missing Authorization vulnerability in Drupal Webform REST allows Forceful Browsing. This issue affects Webform REST versions: from 0.0.0 to 4.2.1.

Affected VersionsENISA

Webform REST 0.0.0 <4.2.1

Affected Packages

composer drupal/webform_rest fix: 4.2.1

euvd webform_rest fix: 4.2.1

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 2 packages in composer, euvd

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

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Check this CVE against your own stack and servers
Exploit and PoC references, threat intelligence from 22 sources

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Lifecycle Timeline

Patch available

Oct 22, 2026 - 03:01 EUVD

CVE Published

Oct 22, 2026 - 01:21 cve.org

UNKNOWN (no severity yet)

Threat Intelligence Overview

EPSS Score

0.2%

Top 91% exploitable

Data Quality

1 sources

Confidence: Low

EUVD

CVE.org

EPSS

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue

Severity Not scored yet

CISA KEV No

Public POC No

EPSS 0.2%

Patch available Yes

Active threat No

Deciding rule

No CVSS yet + dangerous CWE (RCE/injection/auth-bypass class)

What every action level means

Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.

Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.

This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.

This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.

Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

Attack Technique

Authentication Bypass CRITICAL

Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications.

Information Disclosure MEDIUM

Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.