# CVE-2025-10353: Melis Platform - Arbitrary File Upload

> Live exploitation tracking for CVE-2025-10353 by the CrowdSec Live Exploit Tracker, built from real-world attack data crowdsourced from CrowdSec's global network.

Page: https://tracker.crowdsec.net/cves/CVE-2025-10353

## Key facts

- **Exploitation phase:** Limited Exploitation. The vulnerability is known but shows very limited attacker interest or exploitation activity.
- **CVSS score:** 9.8
- **Public exploit available:** Yes
- **Affected products:** Melis Technology Melis Platform
- **Weaknesses:** CWE-434 (Unrestricted Upload of File with Dangerous Type)
- **Tags:** cms

## Description

Melis Platform contains an unrestricted file upload vulnerability in the CMS Slider module caused by insufficient validation of the mcsdetail_img parameter, allowing attackers to upload malicious files and achieve remote code execution.

## CrowdSec analysis

[CVE-2025-10353](https://euvd.enisa.europa.eu/vulnerability/CVE-2025-10353) is a critical unrestricted file upload vulnerability in the Melis Platform CMS Slider module. Attackers can upload arbitrary files through the mcsdetail_img parameter without proper validation, leading to remote code execution.

CrowdSec has been tracking this vulnerability and its exploits since 12th of March 2026.

CrowdSec network observations suggest that most exploitation of CVE-2025-10353 involves focused reconnaissance to identify viable targets. Attackers typically tailor their campaigns based on system exposure and configuration. It is unlikely that a given attack is accidental.
CrowdSec network telemetry also shows that exploitation of CVE-2025-10353 has significantly declined over the past week. Attack volumes are well below the long-term average, suggesting attackers are rapidly losing interest. The vulnerability appears to be falling out of active use across most threat landscapes.

Attackers exploit the `/melis/MelisCmsSlider/MelisCmsSliderDetails/saveDetailsForm` endpoint by uploading malicious files via the `mcsdetail_img` multipart parameter, which are then accessible at predictable paths under `/media/sliders/`.

## Timeline

- 2025-03-15: CVE Published. CVE-2025-10353 is published to NVD.
- 2026-03-12: Rule Released. CrowdSec releases a rule to detect CVE-2025-10353 exploitation attempts against the CrowdSec Network.
- 2026-03-16: CrowdSec First Seen. CrowdSec observes in-the-wild exploitation of CVE-2025-10353 for the first time.

## References

- https://www.incibe.es/en/incibe-cert/notices/aviso/multiple-vulnerabilities-melis-platform
- https://nvd.nist.gov/vuln/detail/CVE-2025-10353
- https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2025/CVE-2025-10353.yaml

## Live exploitation data

The [Live Exploit Tracker page](https://tracker.crowdsec.net/cves/CVE-2025-10353) follows observed exploitation activity for CVE-2025-10353. [Request an API key](https://tracker.crowdsec.net/request-api-key) for full access to its exploitation timeline, attacking IP addresses and blocklists.