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Beaver Builder CVE-2026-18021

| EUVDEUVD-2026-72699 MEDIUM
Code Injection (CWE-94)
2026-09-08 Wordfence GHSA-p236-jmm4-v336
6.5
CVSS 3.1 · Vendor: Wordfence
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Severity by source

Vendor (Wordfence) PRIMARY
6.5 MEDIUM
AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
vuln.today AI
6.5 MEDIUM

Network reachable, no auth, no complexity; scope unchanged and impact limited to L/L because shortcode execution alone does not guarantee full system compromise.

3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

Primary rating from Vendor (Wordfence).

CVSS VectorVendor: Wordfence

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
None

Lifecycle Timeline

2
Analysis Generated
Sep 08, 2026 - 12:20 vuln.today
CVE Published
Sep 08, 2026 - 11:30 cve.org
MEDIUM 6.5

DescriptionCVE.org

The The Beaver Builder Page Builder - Drag and Drop Website Builder plugin for WordPress is vulnerable to arbitrary shortcode execution in all versions up to, and including, 2.10.3.1. This is due to the software allowing users to execute an action that does not properly validate a value before running do_shortcode. This makes it possible for unauthenticated attackers to execute arbitrary shortcodes.

AnalysisAI

Arbitrary shortcode execution in Beaver Builder Page Builder for WordPress (all versions ≤2.10.3.1) allows unauthenticated remote attackers to invoke any registered WordPress shortcode via an insufficiently validated action handler that passes attacker-controlled input directly to do_shortcode(). Because shortcode impact depends on what handlers are registered in the environment, real-world consequences range from limited content disclosure or modification to chained exploitation through dangerous third-party shortcodes. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
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Delivery
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Exploit
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Execution
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Impact
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Vulnerability AssessmentAI

Exploitation No special conditions - remote unauthenticated exploitation against any default installation of Beaver Builder Page Builder ≤2.10.3.1 on WordPress. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N) scores 6.5, reflecting unauthenticated network access with low attack complexity but constrained impact (C:L/I:L, no availability disruption, no scope change). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation Update to Beaver Builder Page Builder version 2.10.3.2 or later, which addresses the insufficient validation in class-fl-builder.php as confirmed by Trac changeset 3645247 (https://plugins.trac.wordpress.org/changeset/3645247/beaver-builder-lite-version/tags/2.10.3.2). … Detailed patch versions, workarounds, and compensating controls in full report.

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CVE-2026-18021 vulnerability details – vuln.today

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