TI-2020-04449 Aliases CVE-2020-5403 GHSA-hp5x-rqf7-43vf

DoS Via Malformed URL with Reactor Netty HTTP Server

LOW 35CWE-20Published 2020-03-03 · Updated 2024-09-17

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: —
Confidentiality · integrity · availability: None · None · High
Fix status: Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub.

Summary

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.

Why it matters now

EPSS 0.01156 67th percentileScored 2026-11-07

Fix Fixed io.projectreactor.netty:reactor-netty-http (Maven): 0.9.5

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Pivotal	Reactor Netty	0.9 v0.9.3.RELEASE; 0.9 v0.9.4.RELEASE	—	No fix listed	CNA
—	io.projectreactor.netty:reactor-netty-http (Maven)	0.9.3 to before 0.9.5	0.9.5	Patch available	GHSA-hp5x-rqf7-43vf

Reactor Netty VendorPivotal Affected 0.9 v0.9.3.RELEASE; 0.9 v0.9.4.RELEASE Fixed in — No fix listed CNA
io.projectreactor.netty:reactor-netty-http (Maven) Vendor— Affected 0.9.3 to before 0.9.5 Fixed in 0.9.5 Patch available GHSA-hp5x-rqf7-43vf

CPE configurations NVD · 2

CPE	Versions	Role	Vendor
cpe:2.3:a:broadcom:reactor_netty:0.9.3:::::::*	0.9.3	Vulnerable	Broadcom
cpe:2.3:a:broadcom:reactor_netty:0.9.4:::::::*	0.9.4	Vulnerable	Broadcom

cpe:2.3:a:broadcom:reactor_netty:0.9.3:*:*:*:*:*:*:* Versions 0.9.3 Vulnerable ·Broadcom
cpe:2.3:a:broadcom:reactor_netty:0.9.4:*:*:*:*:*:*:* Versions 0.9.4 Vulnerable ·Broadcom

Remediation

Fix · GHSA-hp5x-rqf7-43vf io.projectreactor.netty:reactor-netty-http (Maven) Fixed in 0.9.5 Advisory →

Timeline

2026-10-02 Threatist record created from CVE-2020-5403
2026-10-03 Alias added: GHSA-hp5x-rqf7-43vf

References

Advisory 2

TI-2017-05637 Improper input validation in Pivotal Spring Data REST and Spring Boot CVSS 3.0CRITICAL 9.8
TI-2016-04299 When processing authorization requests using the whitelabel views in Spring Security… CVSS 3.0HIGH 8.8
TI-2018-01165 Code injection in Pivotal Spring Security OAuth CVSS 3.0CRITICAL 9.8
TI-2018-11237 DoS Attack via Range Requests CVSS 3.1HIGH 7.5
TI-2019-02791 Apps Manager unverified SSL certs in Cloud Controller proxy CVSS 3.0CRITICAL 9.8
TI-2018-11239 On Demand Services SDK Timing Attack Vulnerability CVSS 3.0CRITICAL 9.8

See all 85 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences