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Ninja Forms CVE-2026-80437

| EUVDEUVD-2026-72092 MEDIUM
Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') (CWE-74)
2026-09-06 WPScan GHSA-pgg5-mm47-8vxf
4.8
CVSS 3.1 · Vendor: WPScan
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Severity by source

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

AC:H reflects impact contingent on registered shortcodes; PR:N confirmed unauthenticated; C:L/I:L match shortcode execution scope; A:N as no availability mechanism exists.

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

Primary rating from Vendor (WPScan).

CVSS VectorVendor: WPScan

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

Lifecycle Timeline

4
Patch available
Sep 06, 2026 - 11:01 EUVD
Metadata Corrected
Sep 06, 2026 - 10:40 vuln.today
tag: Information Disclosure removed
Analysis Generated
Sep 06, 2026 - 10:03 vuln.today
CVE Published
Sep 06, 2026 - 09:36 cve.org
MEDIUM 4.8

DescriptionCVE.org

The Ninja Forms WordPress plugin from 3.14.10 before 3.15.2 does not prevent shortcodes in request-derived values from being executed when it substitutes them into content it later processes for shortcodes, allowing unauthenticated users to run any shortcode registered on the site.

AnalysisAI

Shortcode injection in the Ninja Forms WordPress plugin (versions 3.14.10 through 3.15.1) allows unauthenticated network attackers to execute any shortcode registered on the target site by embedding shortcode syntax into form request fields the plugin later processes. The plugin fails to strip or escape shortcode markers before passing user-controlled values through WordPress's shortcode execution pipeline, meaning the server interprets and runs injected tags. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Recon
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Delivery
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Exploit
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Install
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C2
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Execute
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Impact
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Vulnerability AssessmentAI

Exploitation Exploitation requires the target WordPress site to have the Ninja Forms plugin active in versions 3.14.10 through 3.15.1, and at least one publicly accessible form that accepts and processes user input. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The provided CVSS 3.1 vector CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N yields a base score of 4.8 (Medium). … 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 the Ninja Forms plugin to version 3.15.2 or later, which is the vendor-released patch per the CVE description's stated fix boundary. … Detailed patch versions, workarounds, and compensating controls in full report.

Threat intelligence, references, and detailed analysis are available after sign-in.

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CVE-2026-80437 vulnerability details – vuln.today

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