CVE-2025-9515Network attack vector

Administrator arbitrary file upload via unchecked import

Published Sep 6, 2025 · Updated Apr 8, 2026

Unrestricted file upload in Mondula GmbH Multi Step Form 1.7.25 and earlier allows remote authenticated users to upload files via import. The handle_json_upload method passes an accepted upload to import_json without checking for embedded PHP code or validating the required JSON structure. Administrator privileges are required, and the direct consequence is an arbitrary server-side file write; code execution depends on server handling and the upload location.

CVSS severity7.2
High
EPSS probability0.66%
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 Mondula GmbH Multi Step Form 1.7.25 and earlier allows remote authenticated users to upload files via import. The handle_json_upload method passes an accepted upload to import_json without checking for embedded PHP code or validating the required JSON structure. Administrator privileges are required, and the direct consequence is an arbitrary server-side file write; code execution depends on server handling and the upload location.

The record

CVE
CVE-2025-9515
Published
Sep 6, 2025
Updated
Apr 8, 2026
Vendor
Mondula GmbH
Product
Multi Step Form
Classifications
CWE-434, T1505.003
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Sep 6, 2025CVE publishedPublication date reported by the CVE source.
  2. Apr 8, 2026Record 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 <=1.7.25

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Mondula GmbH · Multi Step Formversion=0 <=1.7.25

Published CVSS scores

7.2WordfenceCVSS:3.1/AV:N/AC:L/PR:H/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.

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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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-434Unrestricted Upload of File with Dangerous Type
T1505.003Web Shell

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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