Bug 2463790 (CVE-2026-22745)

Summary:	CVE-2026-22745 spring-webflux: Spring MVC and Spring WebFlux: Denial of Service via slow static resource resolution on Windows
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security <prodsec-ir-bot>
Status:	NEW ---	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	abrianik, asoldano, bbaranow, bmaxwell, bstansbe, dlofthou, ggrzybek, gmalinko, istudens, ivassile, iweiss, janstey, jraez, mosmerov, msvehla, nwallace, parichar, pberan, pdelbell, pesilva, pjindal, pmackay, rstancel, rstepani, smaestri, tasato, thjenkin, vdosoudi
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	---
Doc Text:	A flaw was found in Spring MVC and Spring WebFlux applications. When an application is configured to serve static resources from the file system on a Windows platform, a remote attacker can send specially crafted requests that are slow to resolve. This can keep HTTP connections in use, leading to a Denial of Service (DoS) on the application.	Story Points:	---
Clone Of:		Environment:
Last Closed:		Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description OSIDB Bzimport 2026-04-29 12:01:37 UTC

Spring MVC and WebFlux applications are vulnerable to Denial of Service attacks when resolving static resources.


More precisely, an application can be vulnerable when all the following are true:

  *  the application is using Spring MVC or Spring WebFlux
  *  the application is serving static resources from the file system
  *  the application is running on a Windows platform


When all the conditions above are met, the attacker can send malicious requests that are slow to resolve and that can keep HTTP connections in use. This can cause a Denial of Service on the application.