CVE-2023-34055 | Spring Boot server Web Observations DoS Vulnerability

In Spring Boot versions 2.7.0 - 2.7.17, 3.0.0-3.0.12 and 3.1.0-3.1.5, 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 * org.springframework.boot:spring-boot-actuator is on the classpath

Published: 2023-11-28 Last update: 2025-02-13 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2023-34055 is rated Moderate Risk (44.7/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.22%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2023-34055

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.28% 1.22% +0.94%
2 2026-03-04 0.17% 0.28% +0.11%
3 2026-03-01 — 0.17% —

Full EPSS history (32 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2023-34055

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.3 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:L)
Might cause slowdowns, glitches, or partial disruption—not a full brick.
 3.9 1.4 [email protected]
6.5 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.8 3.6 [email protected]

Weakness enumeration for CVE-2023-34055

GitHub Security Advisory for CVE-2023-34055

GHSA-jjfh-589g-3hjx · Severity: medium · Ecosystem: maven — Spring Boot Actuator denial of service vulnerability

OS Trackers for CVE-2023-34055

vendor priority summary link
redhat medium — https://access.redhat.com/security/cve/CVE-2023-34055

Affected software / configurations for CVE-2023-34055

Vendor Product Version Raw CPE
vmware spring_boot >= 2.7.0, <= 2.7.17 cpe:2.3:a:vmware:spring_boot:*:*:*:*:*:*:*:*
vmware spring_boot >= 3.0.0, <= 3.0.12 cpe:2.3:a:vmware:spring_boot:*:*:*:*:*:*:*:*
vmware spring_boot >= 3.1.0, <= 3.1.5 cpe:2.3:a:vmware:spring_boot:*:*:*:*:*:*:*:*

References for CVE-2023-34055

cvelogic Threat Intelligence