Security Digest · Vulnerability record
CVE-2025-10353: Melis Platform CMS Unauthenticated File Upload Leading to RCE
File upload leading to remote code execution (RCE) in the “melis-cms-slider” module of Melis Technology's Melis Platform.
CVSS 9.3 Critical EPSS 2.7% · p86
Should you act?
Critical and remotely reachable
No known exploitation yet, but it is network-reachable without credentials. This signal is computed from CISA KEV, EPSS and CVSS data; it is not an editorial verdict.
- Not in CISA KEV, but CISA’s SSVC assessment records a public proof-of-concept, so attack code exists.
- EPSS 2.7%, percentile 86: FIRST’s model estimates a 2.7% chance of exploitation activity in the next 30 days, higher than 86% of all scored CVEs (elevated). EPSS is a probability, not a verdict.
- Remotely reachable with no login and no user interaction. If the vulnerable service is exposed to the internet, prioritize it.
- Only applies if your dependency tree includes
melisplatform/melis-cms-slider(Composer (PHP)) < 5.3.1, fixed in 5.3.1. Check your lockfile, including transitive dependencies.
What it is
File upload leading to remote code execution (RCE) in the “melis-cms-slider” module of Melis Technology's Melis Platform. This vulnerability allows an attacker to upload a malicious file via a POST request to '/melis/MelisCmsSlider/MelisCmsSliderDetails/saveDetailsForm' using the 'mcsdetailimg' parameter.
From the GitHub advisory
File upload leading to remote code execution (RCE) in the “melis-cms-slider” module of Melis Technology's Melis Platform. This vulnerability allows an attacker to upload a malicious file via a POST request to '/melis/MelisCmsSlider/MelisCmsSliderDetails/saveDetailsForm' using the 'mcsdetailimg' parameter.
Weakness type: CWE-43.
Product: melisplatform/melis-cms-slider (Composer (PHP)) · Assigned by: INCIBE · Published: 2025-10-08
Affected and fixed versions
| Ecosystem | Package | Vulnerable | First fixed |
|---|---|---|---|
| Composer (PHP) | melisplatform/melis-cms-slider | < 5.3.1 | 5.3.1 |
| Vendor | Product | Affected versions (per CVE record) |
|---|---|---|
| Melis Technology | Melis Platform | < 5.3.1 |
Severity scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| INCIBE | 4.0 | 9.3 Critical | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N |
| GitHub | 4.0 | 9.3 | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N |
- Attack vector: network (remotely reachable)
- Attack complexity: low
- Attack requirements: none
- Privileges required: none (no login)
- User interaction: none
CVSS measures how bad a flaw is if exploited, not how likely exploitation is. Read it next to the exploitation data below.
Exploitation and urgency
- CISA KEV: not listed (no confirmed in-the-wild exploitation known to CISA).
- CISA SSVC assessment: exploitation poc, automatable yes, technical impact partial.
- FIRST EPSS (model of 2026-10-21): 2.66% probability of exploitation activity in the next 30 days; percentile 86.
Timeline
- — CVE record published by INCIBE
- — GitHub-reviewed advisory GHSA-chw4-gjvw-3gxc published (critical)
- — CVE record last updated
Sources and references
Original sources first. Version and fix details should always be confirmed against the vendor or project advisory.
Vulnerability records
- GitHub Advisory GHSA-chw4-gjvw-3gxc github.com
- CVE.org record CVE-2025-10353 cve.org
- NVD entry CVE-2025-10353 nvd.nist.gov
Other references from the CVE record and advisory
- incibe.es incibe.es
- github.com github.com
- github.com github.com
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