CVE-2025-29287 — ms-mcms
CRITICALCVE-2025-29287 is a critical-severity (CVSS 9.8) Unrestricted File Upload vulnerability in net.mingsoft:ms-mcms. A fix is available for net.mingsoft:ms-mcms — see the affected versions and patch details below.
MCMS allows arbitrary file uploads in the ueditor component
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.
- A successful exploit gives an attacker total control of the affected component, not partial access.
Exploitation and automatability from CISA’s SSVC triage for CVE-2025-29287.
EPSS Exploitation Probability
Probability of exploitation in the next 30 days, from FIRST.org EPSS.
How urgent is this, really
Where this sits among everything scored
Real-World Exposure
net.mingsoft:ms-mcmsReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects Maven packages — download data is not available via public APIs for these ecosystems.
Description
An arbitrary file upload vulnerability in the ueditor component of MCMS v5.4.3 allows attackers to execute arbitrary code via uploading a crafted file.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| ☕Maven | net.mingsoft:ms-mcms | all versions | 5.4.4net.mingsoft:ms-mcms:5.4.4 |
Affected Products
mcmsmingsoftDetection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for net.mingsoft:ms-mcms, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update net.mingsoft:ms-mcms to 5.4.4 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2025-29287 is resolved across your whole dependency graph.
Workarounds
Treat uploaded files as untrusted until proven otherwise: validate the actual content type rather than the supplied extension, store uploads outside the web root on a volume mounted without execute permission, and rename them to server-generated identifiers so an attacker cannot choose the path a request will later resolve.
Frequently Asked Questions
Is CVE-2025-29287 in your dependencies?
Find it across Maven, including transitive dependencies.