CVE-2021-37580

CRITICALNVD 9.89.8—Elevated

9.8

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

CVSS v3: 9.8
EG Score: 9.8(high)
EPSS: 99.9%
KEV: Not listed

Published

November 16, 2021

Last Modified

November 21, 2024

Advisory Details (2)

Auto-updated May 26, 2026

No patch confirmed yet.

generic

https://lists.apache.org/thread/o15j25qwtpcw62k48xw1tnv48skh3zgb

generic

oss-security - CVE-2021-37580: Apache ShenYu Admin bypass JWT authentication

http://www.openwall.com/lists/oss-security/2021/11/16/1

Affected Packages

(1 across 1 ecosystem)

Maven(1)

Package	Vulnerable range	Fixed in	Dependents
org.apache.shenyu:shenyu-admin	2.4.0	2.4.1	—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-287Improper Authentication

Data Freshness Timeline

(refreshed 2× in last 7d / 4× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-29 13:42 UTCepss_batch
2026-05-29 13:42 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 07:30 UTCEG score recompute

Publicly available exploits

(5 references)

Working exploit code is in the public domain (4 GitHub PoCs). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

GitHub PoCLiang2580/CVE-2021-37580
First seen Nov 19, 2021
CVE-2021-37580
Open source ↗
GitHub PoCZororoZ/CVE-2021-37580
First seen Nov 19, 2021
Open source ↗
GitHub PoCfengwenhua/CVE-2021-37580
First seen Nov 17, 2021
CVE-2021-37580的poc
Open source ↗
GitHub PoCrabbitsafe/CVE-2021-37580
First seen Nov 17, 2021
Open source ↗
Nucleihttp/cves/2021/CVE-2021-37580.yaml
First seen Jan 1, 2021
Apache ShenYu Admin JWT - Authentication Bypass
Open source ↗

Frequently asked(5)

What is CVE-2021-37580?

CVE-2021-37580 is a critical vulnerability published on November 16, 2021. 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

When was CVE-2021-37580 disclosed?

CVE-2021-37580 was first published in the National Vulnerability Database on November 16, 2021, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2021-37580 actively exploited?

CVE-2021-37580 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 99.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2021-37580?

CVE-2021-37580 has a CVSS v3 base score of 9.8 (NVD).

How do I remediate CVE-2021-37580?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-37580, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2021-37580

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CVE-2021-37580

📅 Published

🔄 Last Modified

📋 Advisory Details (2)