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CVE-2021-37580

CRITICAL

CVE-2021-37580 is a critical-severity (CVSS 9.8) Improper Authentication vulnerability in org.apache.shenyu:shenyu-admin. 8 public exploit references exist, so weaponization risk is real. O3 Security confirms whether CVE-2021-37580 is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.

Improper Authentication in Apache ShenYu Admin

Also known asGHSA-vpfp-5gwq-g533
Published
Nov 16, 2021
Updated
Jul 8, 2026
Affected
1 pkg
Patched
1 / 1
Exploits
8 known

Real-World Exposure

1 pkg affected
org.apache.shenyu:shenyu-admin

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

A flaw was found in Apache ShenYu Admin. The incorrect use of JWT in ShenyuAdminBootstrap allows an attacker to bypass authentication. This issue affected Apache ShenYu 2.3.0 and 2.4.0

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
Mavenorg.apache.shenyu:shenyu-admin2.3.0&&< 2.4.12.4.1
Exploits & PoCs
8

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 org.apache.shenyu:shenyu-admin. 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. Fix

    Update org.apache.shenyu:shenyu-admin to 2.4.1 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2021-37580 is resolved across your whole dependency graph.

  3. 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.

  4. How O3 protects you

    O3 pinpoints whether CVE-2021-37580 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-2021-37580. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

A flaw was found in Apache ShenYu Admin. The incorrect use of JWT in ShenyuAdminBootstrap allows an attacker to bypass authentication. This issue affected Apache ShenYu 2.3.0 and 2.4.0
O3 Security · Impact-Aware SCA

Is CVE-2021-37580 in your dependencies?

O3 detects CVE-2021-37580 across Maven dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.