CVE-2021-37580
Medium PUBLISHEDApache ShenYu Admin bypass JWT authentication
Not yet in CISA KEV
Recommended Action
Review exposure in your environment and monitor for exploitation signals before broader rollout.
At a Glance
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
- Published
- Nov 16, 2021
- First Seen
- Nov 08, 2025
- CVSS
- 9.8 Critical
- EPSS
- —
Recommended Actions
- Review exposure in your environment and monitor for exploitation signals before broader rollout.
- Check enrichment artifacts for scanner coverage and available PoCs before rolling remediation validation.
- Use the Pro API to automate enrichment, telemetry, and workflow delivery for VM, SOC, and CTI pipelines.
Known Exploited Vulnerability Sources
Catalogues that list this CVE as a known exploited vulnerability.
| Source | Added |
|---|---|
| The Shadowserver (via CIRCL) First | 2025-11-08 00:00 UTC |
Detection Context
Request patterns and scanner artifacts observed for this CVE. Operational detection logic guidance is coming soon.
Scanner Artifacts
Nuclei and Metasploit references linked to this CVE.
| Scanner | Reference | Detected |
|---|---|---|
| Nuclei | https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-37580.yaml | Apr 25, 2025 |
CVSS Scores
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AV:N/AC:L/Au:N/C:P/I:P/A:P
Exploitation Status
Proof of concept available
Recorded 2021-11-17 13:26:46 UTC · GitHub
Weaknesses (CWE)
-
Improper Authentication
Scanner Integrations
| Scanner | Reference | Detected |
|---|---|---|
| Nuclei | https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-37580.yaml | Apr 25, 2025 |
Potential Proof of Concepts
These PoCs are unverified and could contain malware. Use at your own risk.
github · Created 2021-11-19 08:21:44 UTC · 5 stars
github · Created 2021-11-17 08:33:25 UTC · 4 stars
nuclei · Created Unknown
Timeline
-
Added to KEVIntel
-
Detected by Nuclei
-
Proof of Concept Exploit Available
-
CVE Published to Public
-
CVE ID Reserved
Automate This Intelligence with the Pro API
Confidence scoring, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.
Pro API Example
GET /api/v1/pro/kevs/CVE-2021-37580
{
"cve_id": "CVE-2021-37580",
"title": "Apache ShenYu Admin bypass JWT authentication",
"affected_vendor": "Apache Software Foundation",
"affected_product": "Apache ShenYu Admin",
"confidence": "Medium",
"cvss_score": 9.8,
"epss_score": null,
"exploit_status": {
"exploited_in_the_wild": false,
"active_exploitation_observed": false
},
"sensor_telemetry": { "...": "Pro API fields" },
"proof_of_concepts": [ "..." ],
"scanner_integrations": [ "..." ]
}