CVE-2023-34054

Reactor Netty HTTP Server Metrics DoS Vulnerability

HIGH

7.5

CVSS Score

Published: November 28, 2023 at 08:16 AM UTC

Updated: September 4, 2026 at 06:59 PM UTC

2 products affected across 2 vendorsReactor NettyReactor Netty

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Severity

HIGH7.5

Exploit prediction

EPSS 0.9%

Description

In Reactor Netty HTTP Server, versions 1.1.x prior to 1.1.13 and versions 1.0.x prior to 1.0.39, 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 if Reactor Netty HTTP Server built-in integration with Micrometer is enabled.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Reactor Netty · Broadcom

95%

v < 1.0.391.1.0 ≤ v < 1.1.13

Affected range stops below 1.0.39, so it looks safe — our inference, not a vendor statement

Affected range stops below 1.1.13, so it looks safe — our inference, not a vendor statement

Reactor Netty · Spring

60%

1.0.0 ≤ v < 1.0.391.1.0 ≤ v < 1.1.131.0.0 1.1.0 older unsupported versions

Affected range stops below 1.0.39, so it looks safe — our inference, not a vendor statement

Affected range stops below 1.1.13, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

https://spring.io/security/cve-2023-34054

References (1)

Vendor Advisory

Source: [email protected]

https://spring.io/security/cve-2023-34054

CVSS

7.5HIGH[email protected]

Attack Vector: NETWORK
Complexity: LOW
Privileges: NONE
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: NONE
Integrity: NONE
Availability: HIGH

Vector?

Quick Info

StatusMODIFIED

CWE

NVD-CWE-noinfo

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