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CRITICAL severity

CVE-2021-45029 — shenyu-common

CRITICAL

CVE-2021-45029 is a critical-severity (CVSS 9.8) Code Injection vulnerability in org.apache.shenyu:shenyu-common. A fix is available for org.apache.shenyu:shenyu-common — see the affected versions and patch details below.

Code injection in ShenYu

Also known asGHSA-gh38-x2wm-xmc8
Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed
Exploitation data as of Oct 2, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
6.0%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs93th percentile — riskier than 93% of all scored CVEsHighest risk
2.32%5.63%8.94%12.3%4.2%6.0%Apr 26Aug 26Oct 26

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

How urgent is this, really

CVE-2021-45029 by exploitation likelihood (EPSS) against impact (CVSS). Outside the shaded patch-first corner.

Where this sits among everything scored

Of 385,738 CVEs with a current EPSS score, this one falls in the < 10% band (highlighted). Counts from FIRST.org, log-scaled.

Real-World Exposure

1 pkg affected
☕org.apache.shenyu:shenyu-common

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

Groovy Code Injection & SpEL Injection which lead to Remote Code Execution. This issue affected Apache ShenYu 2.4.0 and 2.4.1.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
☕Mavenorg.apache.shenyu:shenyu-common≥ 2.4.0&&< 2.4.22.4.2org.apache.shenyu:shenyu-common:2.4.2

Affected Products

1 product · 2 configurations
Application
shenyuapache
2 versions
2.4.02.4.1

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.apache.shenyu:shenyu-common, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update org.apache.shenyu:shenyu-common to 2.4.2 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2021-45029 is resolved across your whole dependency graph.

  3. Workarounds

    Stop passing untrusted input into the interpreter or shell: call the affected binary with an argument array rather than a composed command string, reject anything outside a strict allowlist of expected values, and run the component under an account that cannot reach beyond the work it legitimately does.

Frequently Asked Questions

Groovy Code Injection & SpEL Injection which lead to Remote Code Execution. This issue affected Apache ShenYu 2.4.0 and 2.4.1.
O3 Security · Impact-Aware SCA

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CVE-2021-45029: shenyu-common RCE — Fixed in 2.4.2