ShenyuApplication · Apache
CVE-2021-37580
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedA 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
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · high confidenceApache ShenYu Admin has an authentication bypass vulnerability due to incorrect JWT (JSON Web Token) implementation in ShenyuAdminBootstrap. The flaw allows attackers to bypass authentication mechanisms and potentially gain unauthorized access to the admin interface. This affects versions 2.3.0 and 2.4.0.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data
ShenyuApplication
= 2.3.0= 2.4.0CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Identify the installed Apache ShenYu Admin versionCheck the application JAR/WAR file name, pom.xml, build.gradle, or the startup logs for the version number. You can also check the / Actuator /version endpoint if exposed.Affected if The version is 2.3.0 or 2.4.0 exactly.
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Confirm JWT authentication is in useInspect the application configuration files (application.yml or application.properties) for JWT-related settings under the shenyu.jwt or similar configuration section. Look for jwt.enabled: true or jwt.secret configuration.Affected if JWT authentication is enabled and configured in the ShenYu Admin instance.
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Review JWT token validation implementationLocate the JWT authentication filter or handler class in the ShenyuAdminBootstrap codebase. Examine the token validation logic for flaws such as missing signature verification, weak secret key, or logic that bypasses validation under certain conditions.Affected if The JWT validation logic contains implementation errors that allow bypass.
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Examine authentication endpoints for bypass conditionsTest unauthenticated access to admin API endpoints such as /dashboard, /plugin, or /auth. Check if requests with malformed, expired, or missing JWT tokens are accepted without rejection.Affected if Unauthenticated or invalid JWT requests are accepted and return successful responses instead of 401/403 errors.
You are affected if running Apache ShenYu Admin version 2.3.0 or 2.4.0 with JWT authentication enabled, and the JWT validation can be bypassed allowing unauthorized admin access.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
dbcve · scopedUpgrade to a patched version of Apache ShenYu where the JWT validation logic has been corrected. If immediate patching is not possible, review and harden JWT token validation in the authentication module.
Apache ShenYu 2.5.0 or later
- 1. Back up your current Apache ShenYu configuration and data
- 2. Stop the ShenyuAdminBootstrap service
- 3. Upgrade Apache ShenYu to version 2.5.0 or later from the official Apache distribution
- 4. Verify the JWT authentication mechanism is properly configured in the new version
- 5. Test authentication flows in the Admin console to confirm the vulnerability is resolved
- 6. Restart the ShenyuAdminBootstrap service
Generated from the published advisory — verify against the referenced sources before acting.
Fix this in Shenyu
Scoped from the published advisory
- Consultation4.0 h
- Implementation8.0 h
- Testing6.0 h
- Review / QA4.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $6,176.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2021-37580 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2021-37580 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Version or environment caveats, and links to real fixes
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