CVE-2021-46062
HIGHCVE-2021-46062 is a high-severity (CVSS 7.1) vulnerability in net.mingsoft:ms-basic. 1 public exploit reference exists, so weaponization risk is real. O3 Security confirms whether CVE-2021-46062 is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.
MCMS Arbitrary File Deletion vulnerability
Real-World Exposure
net.mingsoft:ms-basic☕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
net.mingsoft:ms-basic is used for plugin management for applications built with Maven for the Mingfei Content Management System (MCMS). ms-basic before 2.1.16 is vulnerable to arbitrary file deletion using POST requests to /template/writeFileContent via the oldFileName parameter. MCMS before 5.2.11 is also vulnerable since it bundles vulnerable versions of ms-basic.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| ☕Maven | net.mingsoft:ms-basic | all versions | 2.1.16 |
| ☕Maven | net.mingsoft:ms-mcms | all versions | 5.2.11 |
Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for net.mingsoft:ms-basic. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.
Fix
Update net.mingsoft:ms-basic to 2.1.16 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2021-46062 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 O3 protects you
O3 pinpoints whether CVE-2021-46062 is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.
Tailored to CVE-2021-46062. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Frequently Asked Questions
Is CVE-2021-46062 in your dependencies?
O3 detects CVE-2021-46062 across Maven dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.