CVE-2026-22745 CVE-2026-22745 : Denial of service in static resource handling on Windows platforms
Attackers can cause denial of service in Spring MVC or WebFlux applications serving static resources on Windows by sending slow-to-resolve requests.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-22745?
CVE-2026-22745 is a medium-severity denial of service vulnerability in Vmware Spring Framework, published on 29 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
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.
Weakness: CWE-400
Which versions are affected by CVE-2026-22745?
16 open source packages ship an affected version, including org.springframework:spring-webflux and org.springframework:spring-webmvc. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
org.springframework:spring-webflux Maven | All versions to 5.3.47 | None |
org.springframework:spring-webflux Maven | All versions to 5.3.47 | None |
org.springframework:spring-webflux Maven | From 6.1.0 to 6.1.26 | None |
org.springframework:spring-webflux Maven | From 6.1.0 to 6.1.26 | None |
org.springframework:spring-webflux Maven | From 6.2.0 | 6.2.18 |
org.springframework:spring-webflux Maven | From 6.2.0 | 6.2.18 |
10 more packages
org.springframework:spring-webflux Maven | From 7.0.0 | 7.0.7 |
org.springframework:spring-webflux Maven | From 7.0.0 | 7.0.7 |
org.springframework:spring-webmvc Maven | All versions to 5.3.47 | None |
org.springframework:spring-webmvc Maven | All versions to 5.3.47 | None |
org.springframework:spring-webmvc Maven | From 6.1.0 to 6.1.26 | None |
org.springframework:spring-webmvc Maven | From 6.1.0 to 6.1.26 | None |
org.springframework:spring-webmvc Maven | From 6.2.0 | 6.2.18 |
org.springframework:spring-webmvc Maven | From 6.2.0 | 6.2.18 |
org.springframework:spring-webmvc Maven | From 7.0.0 | 7.0.7 |
org.springframework:spring-webmvc Maven | From 7.0.0 | 7.0.7 |
Products include Vmware Spring Framework.
How do I fix CVE-2026-22745?
Upgrade org.springframework:spring-webflux to a fixed version for your release line: 6.2.18 or 7.0.7.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-22745 being exploited?
There is no known exploitation of CVE-2026-22745 in the wild and no public exploit code.
Other vulnerabilities in Vmware Spring Framework
- CVE-2026-47884 Spring Framework Improper Path Limitation in XsltView
- CVE-2026-47890 Spring Framework Server Sent Event stream corruption while rendering fragments
- CVE-2026-47891 Spring Framework maxInMemorySize Bypassed in Jaxb2Decoder
- CVE-2026-47892 Spring Framework Header Predicate Bypass in WebFlux Functional Endpoints
- CVE-2026-59313 Server Sent Event stream corruption in Spring MVC functional web framework
Sources
Also known as CLEANSTART-2026-XE63512, CLEANSTART-2026-YX18209, CLSA-2026-1780361409, CLSA-2026-1783299709, CLSA-2026-1784769525, ECHO-a697-514e-e23d and 11 more.