Multi Step Form Plugin up to 1.7.25 on WordPress unrestricted upload

Summaryinfo

A vulnerability, which was classified as critical, has been found in Multi Step Form Plugin up to 1.7.25 on WordPress. Impacted is an unknown function. This manipulation causes unrestricted upload. This vulnerability is registered as CVE-2025-9515. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability was found in Multi Step Form Plugin up to 1.7.25 on WordPress. It has been declared as critical. Affected by this vulnerability is an unknown functionality. The manipulation with an unknown input leads to a unrestricted upload vulnerability. The CWE definition for the vulnerability is CWE-434. The product allows the attacker to upload or transfer files of dangerous types that can be automatically processed within the product's environment. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

The Multi Step Form plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation via the import functionality in all versions up to, and including, 1.7.25. This makes it possible for authenticated attackers, with Administrator-level access and above, to upload arbitrary files on the affected site's server which may make remote code execution possible.

It is possible to read the advisory at wordfence.com. This vulnerability is known as CVE-2025-9515. The exploitation appears to be easy. The attack can be launched remotely. The exploitation requires an enhanced level of successful authentication. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 09/08/2025). The attack technique deployed by this issue is T1608.002 according to MITRE ATT&CK.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2025-27161). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

• WordPress Plugin

Name

• Multi Step Form Plugin

Version

• 1.7.0
• 1.7.1
• 1.7.2
• 1.7.3
• 1.7.4
• 1.7.5
• 1.7.6
• 1.7.7
• 1.7.8
• 1.7.9
• 1.7.10
• 1.7.11
• 1.7.12
• 1.7.13
• 1.7.14
• 1.7.15
• 1.7.16
• 1.7.17
• 1.7.18
• 1.7.19
• 1.7.20
• 1.7.21
• 1.7.22
• 1.7.23
• 1.7.24
• 1.7.25

CPE 2.3info

• 🔒
• 🔒
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CPE 2.2info

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Be aware that VulDB is the high quality source for vulnerability data.

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