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Not in CISA KEV
HIGH severity

CVE-2020-7672

HIGH

CVE-2020-7672 is a high-severity (CVSS 8.6) Code Injection vulnerability in mosc. 1 public exploit reference exists, so weaponization risk is real. O3 Security confirms whether CVE-2020-7672 is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.

Code Injection in mosc

Published
May 17, 2021
Updated
Mar 13, 2026
Affected
1 pkg
Patched
None yet
Exploits
1 known
Exploitation data as of Mar 13, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Real-World Exposure

1 pkg affected

How broadly this vulnerability is actually deployed: weekly install volume shows current usage, and reverse-dependency count shows how many other packages break if it stays unpatched.

6other npm packages depend on this — each one inherits the vulnerability until it's patched upstream
moscnpm
528downloads / week

Description

mosc through 1.0.0 is vulnerable to Arbitrary Code Execution. User input provided to properties argument is executed by the eval function, resulting in code execution.

Affected Packages

1 total
EcosystemPackageVulnerable rangeFix
📦npmmoscall versionsNo fix
Exploits & PoCs
1

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 dependency
  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for mosc. 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.

  2. Remediation status

    No patched version of mosc has shipped for CVE-2020-7672 yet. Where your build allows, override or pin the dependency away from the vulnerable range, and apply any maintainer-recommended mitigation.

  3. Mitigate without a patch

    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.

  4. How O3 protects you

    O3 pinpoints whether CVE-2020-7672 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-2020-7672. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

mosc through 1.0.0 is vulnerable to Arbitrary Code Execution. User input provided to `properties` argument is executed by the `eval` function, resulting in code execution.
O3 Security · Impact-Aware SCA

Is CVE-2020-7672 in your dependencies?

O3 detects CVE-2020-7672 across npm dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.

CVE-2020-7672: Code Injection in mosc (High… | O3 Security