External risk intelligence

Melis Platform Slider Module Remote Code Execution

CVE advisorySeverity: CRITICAL (CVSS 9.3)

CVE-2025-10353

The vulnerability exists in a CMS module, which is typically deployed as a public-facing web application. Since it involves handling file uploads through a web endpoint that is often exposed to the internet to allow content management, it is commonly reachable in real-world web deployments.

Remote Code Execution

Halo Surface Signal: 4 out of 5 — likely to be public-facing.

External exposure likelihood

Horizon Alert

Summary of the vulnerability and why it matters

This advisory details a critical vulnerability in a Melis Platform module that allows for remote code execution by uploading a malicious file through a specific web request. While the full business impact is not yet defined, this type of vulnerability could potentially allow unauthorized access and control over affected systems if exploited.

Malicious file uploads can execute code remotely.
High severity in a public-facing web application module.
Confirm relevance and potential exposure within the organization.

Attack Path

How an attacker could exploit the issue

An attacker can exploit this vulnerability by sending a malicious file through a web request to the Melis Platform's slider module. This occurs when the 'mcsdetail_img' parameter is used in a POST request to the '/melis/MelisCmsSlider/MelisCmsSliderDetails/saveDetailsForm' endpoint. Successful exploitation could allow an attacker to execute arbitrary code on the affected system.

No authentication or user interaction required.
Uploading a crafted file via a specific form parameter.
Remote code execution on the server.

Live Threat

Current exploitation, exposure, and threat context

When supported by the advisory, an attacker could achieve remote code execution by uploading a malicious file through a specific POST request to the Melis Platform's "melis-cms-slider" module. This could affect the integrity and availability of the affected system.

System files and service integrity at risk.
Malicious file uploaded via POST request.
Remote code execution, impacting service availability.

Operational Fix

Recommended remediation, mitigation, and detection steps

This critical vulnerability in the Melis Platform's "melis-cms-slider" module allows unauthenticated remote code execution via a crafted file upload. Ownership typically falls to the application team responsible for the Melis Platform, with immediate triage required by the security or network team to assess exposure and identify critical instances. Planning for remediation should involve coordinating with the vendor and understanding potential operational impacts before applying fixes during scheduled maintenance.

Application owners must identify affected instances.
Verify public reachability and business criticality.
Plan remediation with vendor coordination.

Supplementary metadata

CVSS vector

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Frequently asked questions

What is the Melis Platform and its slider module?

The Melis Platform is a PHP-based framework used for developing and managing enterprise web applications and content. The melis-cms-slider module is a specific component within this platform designed to handle image-based content management, such as banners or sliders, which typically requires a web-accessible interface to allow content administrators to upload and display media assets on a site.

What does CWE-43 mean for CVE-2025-10353?

CWE-43 refers to a weakness involving the unsafe handling of file uploads. In the context of CVE-2025-10353, it means the application does not properly validate or restrict the type of files being uploaded to the slider module. An attacker can use this flaw to send a malicious file that the server mistakenly accepts, leading to remote code execution, where the server runs unauthorized instructions embedded within that file.

How can an attacker trigger this vulnerability?

An attacker triggers this by sending a specially crafted POST request to a specific endpoint used for saving form details. This request targets the 'mcsdetail_img' parameter within the slider module. It is important to note that this does not require any existing user account or authentication; simply having access to the web endpoint is sufficient for an attacker to initiate the malicious file upload.

Why should I care about this CVE-2025-10353 risk?

You should care because Halo Surface Signal indicates this vulnerability likely impacts public-facing web applications. Since the slider module is designed to be reachable for content management, instances of the Melis Platform deployed on the internet are more likely to be exposed. If your instance is accessible to the public, it is significantly more vulnerable to being reached by an external attacker compared to internal-only systems.

What steps should I take if I use Melis Platform?

First, identify all instances of the Melis Platform within your environment and confirm if the melis-cms-slider module is active. Work with your security team to determine if these instances are internet-facing. Coordinate with Melis Technology for official patches or guidance on disabling the affected module while you plan a maintenance window to apply necessary updates or configuration changes.

References

Written by Nicholas Merritt

Nicholas Merritt is VP of Security Solutions at Halo Security. With more than 25 years across application security, vulnerability prioritization, and offensive security, he helps teams translate threat data into practical exposure validation and remediation focus. He authors Halo Threat Intelligence CVE advisories using Halo Surface Signal and H/A/L/O context to prioritize internet-facing risk.