CVE-2023-34053 Spring Framework server Web Observations DoS Vulnerability
Crafted HTTP requests can cause denial of service in Spring MVC or WebFlux applications with specific observation configurations.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2023-34053?
CVE-2023-34053 is a medium-severity denial of service vulnerability in Vmware Spring Framework, published on 28 Nov 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
In Spring Framework versions 6.0.0 - 6.0.13, it is possible for a user to provide specially crafted HTTP requests that may cause a denial-of-service (DoS) condition.
Specifically, an application is vulnerable when all of the following are true:
* the application uses Spring MVC or Spring WebFlux * io.micrometer:micrometer-core is on the classpath * an ObservationRegistry is configured in the application to record observations
Typically, Spring Boot applications need the org.springframework.boot:spring-boot-actuator dependency to meet all conditions.
Which versions are affected by CVE-2023-34053?
2 open source packages ship an affected version, including org.springframework:spring-webmvc. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
org.springframework:spring-webmvc Maven | From 6.0.0 | 6.0.14 |
org.springframework:spring-webmvc Maven | From 6.0.0 | 6.0.14 |
Products include Vmware Spring Framework.
How do I fix CVE-2023-34053?
Upgrade org.springframework:spring-webmvc to 6.0.14 or later.
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-2023-34053 being exploited?
There is no known exploitation of CVE-2023-34053 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 GHSA-v94h-hvhg-mf9h, UBUNTU-CVE-2023-34053.