CVE-2026-4091

EUVD-2026-22870 MEDIUM

2026-04-15 Wordfence

WordPress CSRF

6.1

CVSS 3.1

CVSS VectorNVD

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Lifecycle Timeline

Analysis Generated

Apr 15, 2026 - 09:09 vuln.today

DescriptionNVD

The OPEN-BRAIN plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 0.5.0. This is due to missing nonce verification on the settings form in the func_page_main() function. This makes it possible for unauthenticated attackers to inject malicious web scripts via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.

AnalysisAI

Cross-Site Request Forgery (CSRF) in OPEN-BRAIN plugin for WordPress versions up to 0.5.0 allows unauthenticated attackers to inject malicious web scripts by tricking site administrators into clicking a malicious link, due to missing nonce verification in the func_page_main() settings form handler. With a CVSS score of 6.1 and network-level attack surface requiring only user interaction, this vulnerability affects any WordPress installation using the affected plugin. …

Analysis

Detailed AI-generated intelligence summary covering attack vector, impact assessment, affected versions, remediation steps, and indicators of compromise.

POChttps://••••••••••.com/exploit

PATCHhttps://••••••••••.com/patch

ADVISORYhttps://••••••••••.com/advisory

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CVE-2026-4091 vulnerability details – vuln.today

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