CVE-2025-13407Public exploitNetwork attack vector

Remote code execution via filename sanitization ordering

Published Dec 24, 2025 · Updated Dec 24, 2025

Unrestricted file upload in Rocketgenius Gravity Forms before 2.9.23.1 allows remote attackers to execute PHP through chunked uploads. The upload handler checks a filename ending in an extra exclamation mark against blocked extensions, then WordPress sanitization removes that mark and leaves a PHP filename. A public form with multi-file upload enabled and a discoverable upload path is required; successful exploitation runs code in the WordPress hosting context.

CVSS severity6.8
Medium
EPSS probability0.36%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Unrestricted file upload in Rocketgenius Gravity Forms before 2.9.23.1 allows remote attackers to execute PHP through chunked uploads. The upload handler checks a filename ending in an extra exclamation mark against blocked extensions, then WordPress sanitization removes that mark and leaves a PHP filename. A public form with multi-file upload enabled and a discoverable upload path is required; successful exploitation runs code in the WordPress hosting context.

The record

CVE
CVE-2025-13407
Published
Dec 24, 2025
Updated
Dec 24, 2025
Vendor
Rocketgenius
Product
Gravity Forms
Classifications
CWE-434, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 24, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 24, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <2.9.23.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Rocketgenius · Gravity Formsversion=0 <2.9.23.1

Published CVSS scores

6.8CISA-ADPCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
9.8WordfenceCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-434Unrestricted Upload of File with Dangerous Type
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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