CVE-2021-37580
CriticalExploitedImproper Authentication in Apache ShenYu Admin
Published Nov 17, 2021 · Updated Aug 27, 2026 · Also known as GHSA-vpfp-5gwq-g533
Key Facts
Patch immediately- CVE-2021-37580 is a critical-severity vulnerability (CVSS 9.8 v3.1) affecting Shenyu (Apache), org.apache.shenyu:shenyu-admin (maven), Apache ShenYu Admin.
- It is exploited in the wild, listed in Industry KEV feed, CIRCL KEV since Oct 14, 2023. No public exploit code is known.
- EPSS estimates a 42% probability of exploitation in the next 30 days.
- Fixed versions are available, including org.apache.shenyu:shenyu-admin 2.4.1.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
CVSS v3.1
9.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
42%
Higher than 98.6% of all scored CVEs
Exploited in the wild
Yes
2 catalog listings
Public exploit code
None known
Get the full CVE-2021-37580 brief as a PDF
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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
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| Industry KEV feed | Dec 5, 2023 | n/a | Not reported |
| CIRCL KEV | Oct 14, 2023 | n/a | Not reported |
Required action: Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.
Affected Products
4 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| ShenyuApache | 2.3.0, 2.4.0 | n/a |
| org.apache.shenyu:shenyu-adminmaven | >= 2.3.0 | 2.4.1 |
| Apache ShenYu Admin | >= Apache ShenYu Admin 2.3.0-2.4.0 | n/a |
Patched Releases
org.apache.shenyu:shenyu-admin
2.4.1
Timeline
Publicly disclosed
Nov 17, 2021
Added to CIRCL KEV
Oct 14, 2023
Added to Industry KEV feed
Dec 5, 2023
Last updated
Aug 27, 2026
Weakness Type
- CWE-287 Improper Authentication
References
- advisoryGHSA advisory
- advisoryhttps://lists.apache.org/thread/o15j25qwtpcw62k48xw1tnv48skh3zgb
- advisoryhttps://nvd.nist.gov/vuln/detail/CVE-2021-37580
- advisory[oss-security] 20211116 CVE-2021-37580: Apache ShenYu Admin bypass JWT authentication
- exploitVulnCheck exploitation report
FAQ
Common Questions.
A flaw was found in Apache ShenYu Admin.
Affected: Shenyu (Apache) versions 2.3.0, 2.4.0; org.apache.shenyu:shenyu-admin (maven) versions >= 2.3.0; Apache ShenYu Admin versions >= Apache ShenYu Admin 2.3.0-2.4.0. The full list is in the CVE brief.
It is exploited in the wild, listed in Industry KEV feed, CIRCL KEV since Oct 14, 2023.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
No public exploit code is known.
Fixed versions are available, including org.apache.shenyu:shenyu-admin 2.4.1.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
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