How severe is CVE-2025-10353?

No CVSS score has been assigned to CVE-2025-10353 yet. Review the advisory details and affected package list to assess your exposure.

Which packages are affected by CVE-2025-10353?

CVE-2025-10353 affects the following packages: melisplatform/melis-cms-slider (Packagist). Ecosystems affected: Packagist.

How do I fix CVE-2025-10353?

Update melisplatform/melis-cms-slider to 5.3.1 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2025-10353 is resolved across your whole dependency graph.

How do I detect CVE-2025-10353 in my Packagist dependencies?

Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for melisplatform/melis-cms-slider, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

How do I mitigate CVE-2025-10353 if there is no patch (or I can't update yet)?

If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

Is CVE-2025-10353 actively exploited in the wild?

No public exploit code has been indexed for CVE-2025-10353 yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

What is the EPSS score for CVE-2025-10353?

CVE-2025-10353 has an EPSS (Exploit Prediction Scoring System) score of 2.7%, placing it in the 86th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. This score indicates relatively lower exploitation probability, though the CVSS severity should still guide your patching priority.

What type of vulnerability is CVE-2025-10353?

CVE-2025-10353 is classified as CWE-43 (CWE-43). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation.

Is there exploit tooling available for CVE-2025-10353?

A Nuclei detection template exists for CVE-2025-10353, meaning automated scanners can fingerprint it. Public exploit tooling significantly increases real-world risk — prioritize patching and ensure detection coverage. Exploit tooling should only ever be used in isolated, authorized testing environments.

When was CVE-2025-10353 published, and has it been updated?

CVE-2025-10353 was published on October 8, 2025 and was last updated on October 9, 2025. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

🐘 Packagist

Not in CISA KEV

CVE-2025-10353 — melis-cms-slider

Fix: melisplatform/melis-cms-slider@c875733

CVE-2025-10353 is a CWE-43 vulnerability in melisplatform/melis-cms-slider. A fix is available for melisplatform/melis-cms-slider — see the affected versions and patch details below.

Melis Platform CMS Unauthenticated File Upload Leading to RCE

Published

Oct 8, 2025

Updated

Oct 9, 2025

Affected

1 pkg

Patched

1 / 1

Exploits

None indexed

Exploitation data as of Nov 6, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

Proof-of-concept exploit code exists

CISA’s SSVC triage found public proof-of-concept exploit code for this CVE, though no confirmed active exploitation.
CISA assesses this as automatable — exploitation doesn’t require manual, per-target effort, which raises the odds of mass scanning and opportunistic attacks.

Exploitation and automatability from CISA’s SSVC triage for CVE-2025-10353.

EPSS Exploitation Probability

via FIRST.org ↗

2.7%probability of exploitation in next 30 days

Lower Risk0.00%

Lower risk than most CVEs86th percentile — riskier than 86% of all scored CVEsHighest risk

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

Real-World Exposure

1 pkg affected

🐘melisplatform/melis-cms-slider

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Packagist packages — download data is not available via public APIs for these ecosystems.

Description

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 'mcsdetail_img' parameter.

Affected Packages

1 total 1 fixed

Ecosystem	Package	Vulnerable range	Fix
🐘Packagist	`melisplatform/melis-cms-slider`	all versions	5.3.1`composer require melisplatform/melis-cms-slider:^5.3.1`

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for melisplatform/melis-cms-slider, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update melisplatform/melis-cms-slider to 5.3.1 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2025-10353 is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

How to detect CVE-2025-10353

A community-maintained Nuclei template exists for this CVE. You can scan for it directly:

nuclei -id cve-2025-10353 -u https://target

Template: Melis Technology Melis Platform - Unrestricted File Upload & Remote Code Execution
Severity: critical
Impact: Attackers can upload malicious files leading to remote code execution and full system compromise.
Remediation: Update to the latest version with the vulnerability fixed.

Template by ProjectDiscovery nuclei-templates (ohmygod20260203), MIT licensed. View the full template. Scan only systems you are authorised to test.

Frequently Asked Questions

O3 Security · Impact-Aware SCA

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