EUVD-2026-23650

| CVE-2026-4801 MEDIUM

2026-04-18 Wordfence

XSS WordPress

6.4

CVSS 3.1

CVSS VectorNVD

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Lifecycle Timeline

Analysis Generated

Apr 18, 2026 - 04:42 vuln.today

DescriptionNVD

The Page Builder Gutenberg Blocks - CoBlocks plugin for WordPress is vulnerable to Stored Cross-Site Scripting via external iCal feed data in all versions up to, and including, 3.1.16 due to insufficient output escaping of event titles, descriptions, and locations fetched from external iCal feeds in the Events block rendering function. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

AnalysisAI

Stored Cross-Site Scripting in CoBlocks Page Builder plugin for WordPress allows authenticated Contributor-level users to inject malicious scripts via external iCal feed data in the Events block, executing arbitrary JavaScript in pages visited by any user. The vulnerability exists in all versions through 3.1.16 due to insufficient output escaping of event titles, descriptions, and locations. …

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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EUVD-2026-23650 vulnerability details – vuln.today

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