CVE-2020-5403
HIGHCVSS 7.5/10EPSS 1.12%
Last modified
CVE-2020-5403 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. Reactor Netty HttpServer, versions 0.9.3 and 0.9.4, is exposed to a URISyntaxException that causes the connection to be closed prematurely instead of producing a 400 response.. EPSS estimates a 1.12% chance of exploitation in the next 30 days.
Description
Reactor Netty HttpServer, versions 0.9.3 and 0.9.4, is exposed to a URISyntaxException that causes the connection to be closed prematurely instead of producing a 400 response.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Pivotal | Reactor Netty | 0.9.3 |
| Pivotal | Reactor Netty | 0.9.4 |
References
- https://pivotal.io/security/cve-2020-5403Vendor Advisory
- https://pivotal.io/security/cve-2020-5403Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2020-5403?
Reactor Netty HttpServer, versions 0.9.3 and 0.9.4, is exposed to a URISyntaxException that causes the connection to be closed prematurely instead of producing a 400 response.
How severe is CVE-2020-5403?
CVE-2020-5403 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.12% probability of exploitation in the next 30 days.
How do I fix CVE-2020-5403?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2020-5403?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST