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CVE-2023-34053

Spring Framework server Web Observations DoS Vulnerability

5.3 MediumFix available

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.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
None
Integrity
None
Availability
Low

Exploit likelihood

1.16%Up 1.1 points since Nov 29, 2023
90%50%10%1%

What each source reports

CVE List Score used 5.3

Spring Framework server Web Observations DoS Vulnerability

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.

Record
CVE-2023-34053
CVSS 3.1
5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Updated
2026-11-02
EUVDEUVD-2023-3041 5.3

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.

Record
EUVD-2023-3041
CVSS 3.1
5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Updated
2026-11-03
GitHub AdvisoriesGHSA-v94h-hvhg-mf9h 7.5

Spring Framework vulnerable to denial of service

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.

Record
GHSA-v94h-hvhg-mf9h
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
NVD 5.3

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.

Record
CVE-2023-34053
CVSS 3.1
5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSV 5.3

Spring Framework server Web Observations DoS Vulnerability

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.

Record
CVE-2023-34053
CVSS 3.1
5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Updated
2026-11-02
OSVGHSA-v94h-hvhg-mf9h 7.5

Spring Framework vulnerable to denial of service

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.

Record
GHSA-v94h-hvhg-mf9h
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVUBUNTU-CVE-2023-34053 5.3

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.

Record
UBUNTU-CVE-2023-34053
CVSS 3.1
5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
org.springframework:spring-webmvc
Maven
 6.0.0 up to 6.0.14
6.0.14
org.springframework:spring-webmvc
Maven
 6.0.0 up to 6.0.14, plus listed versions
6.0.16.0.106.0.116.0.126.0.13
Show 8 moreShow less
6.0.26.0.36.0.46.0.56.0.66.0.76.0.86.0.9
6.0.14
libspring-java
Ubuntu:Pro:14.04:LTS
 All versions, plus listed versions
3.0.6.RELEASE-73.0.6.RELEASE-83.0.6.RELEASE-93.0.6.RELEASE-103.0.6.RELEASE-11
Show 4 moreShow less
3.0.6.RELEASE-123.0.6.RELEASE-133.0.6.RELEASE-13ubuntu0.1~esm13.0.6.RELEASE-13ubuntu0.1~esm2
 None known
libspring-java
Ubuntu:Pro:16.04:LTS
 All versions, plus listed versions
3.2.13-33.2.13-43.2.13-53.2.13-5ubuntu0.1~esm1
 None known
libspring-java
Ubuntu:Pro:18.04:LTS
 All versions, plus listed versions
4.3.11-14.3.12-14.3.13-24.3.14-14.3.22-1~18.044.3.22-1~18.04.1~esm1
 None known
libspring-java
Ubuntu:Pro:20.04:LTS
 All versions, plus listed versions
4.3.22-44.3.22-4ubuntu0.1~esm1
 None known
libspring-java
Ubuntu:Pro:22.04:LTS
 All versions, plus listed versions
4.3.30-14.3.30-1ubuntu0.1~esm1
 None known
libspring-java
Ubuntu:Pro:24.04:LTS
 All versions, plus listed versions
4.3.30-24.3.30-2ubuntu0.24.04.1~esm1
 None known
libspring-java
Ubuntu:25.10
 All versions, plus listed versions
4.3.30-2ubuntu14.3.30-3ubuntu1
 None known
libspring-java
Ubuntu:26.10
 All versions, plus listed versions
4.3.30-3ubuntu1
 None known
libspring-java
Ubuntu:26.04:LTS
 All versions, plus listed versions
4.3.30-3ubuntu1
 None known

History

History
RecordedChangedSources
aliases, products, publishedEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2023-34053 is a medium vulnerability (CVSS 5.3) in Spring Framework, published November 28, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.16%, the 67th percentile. Fixed in org.springframework:spring-webmvc 6.0.14.

References

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