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Not in CISA KEV
HIGH severity

CVE-2023-50571 — easy-rules-mvel

HIGH

CVE-2023-50571 is a high-severity (CVSS 7.8) remote code execution vulnerability in org.jeasy:easy-rules-mvel. 1 public exploit or proof-of-concept reference is indexed, so weaponization risk is real. The records list no fixed version yet; check the vendor advisory below and apply the mitigations in the meantime.

easy-rules-mvel vulnerable to remote code execution

Also known asGHSA-fgwc-3j6w-ch22
Published
Updated
Affected
1 pkg
Patched
See advisory
Exploits
1 known
Exploitation data as of Oct 31, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
0.4%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs38th percentile — riskier than 38% of all scored CVEsHighest risk
0.00%0.39%0.78%1.17%0.7%0.4%May 26Sep 26Oct 26

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

1 pkg affected
☕org.jeasy:easy-rules-mvel

Real-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

easy-rules-mvel v4.1.0 was discovered to contain a remote code execution (RCE) vulnerability via the component MVELRule.

Affected Packages

1 total
EcosystemPackageVulnerable rangeFix
☕Mavenorg.jeasy:easy-rules-mvelall versionsNo fix

Affected Products

1 product · 1 configurations
Application
easy rulesjeasy
1 version
4.1.0
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.

easy-rules-mvel v4.1.0 was discovered to contain a remote code execution…

github.comNVDJan 2024

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for org.jeasy:easy-rules-mvel, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Remediation status

    The records we use list no patched version of org.jeasy:easy-rules-mvel for CVE-2023-50571. Check the maintainer's advisory, and where your build allows, override or pin the dependency away from the vulnerable range.

  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.

Frequently Asked Questions

easy-rules-mvel v4.1.0 was discovered to contain a remote code execution (RCE) vulnerability via the component MVELRule.
O3 Security · Impact-Aware SCA

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CVE-2023-50571: easy-rules-mvel RCE (High 7.8)