CVE-2024-32652Public exploitNetwork attack vector

Application crash via malformed Host header

Published Apr 19, 2024 · Updated Aug 2, 2024

Improper exception handling in Hono @hono/node-server 1.3.0 through 1.10.0 allows remote attackers to crash applications via a malformed Host header. The newRequest function concatenates the unvalidated Host value into a URL constructor, and the resulting ERR_INVALID_URL escapes the request listener. No authentication or user interaction is required; one crafted request can stop the Node.js application and deny service.

CVSS severity5.3
Medium
EPSS probability0.88%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper exception handling in Hono @hono/node-server 1.3.0 through 1.10.0 allows remote attackers to crash applications via a malformed Host header. The newRequest function concatenates the unvalidated Host value into a URL constructor, and the resulting ERR_INVALID_URL escapes the request listener. No authentication or user interaction is required; one crafted request can stop the Node.js application and deny service.

The record

CVE
CVE-2024-32652
Published
Apr 19, 2024
Updated
Aug 2, 2024
Vendor
Hono
Product
@hono/node-server
Classifications
CWE-755, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 19, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=>= 1.3.0, < 1.10.1
  2. Affected versionversion=1.3.0 <1.10.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Hono · @hono/node-serverversion=>= 1.3.0, < 1.10.1; version=1.3.0 <1.10.1

Published CVSS scores

5.3GitHub Advisory DatabaseCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
7.5GitHub CNA recordCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-755Improper Handling of Exceptional Conditions
T1499.004Application or System Exploitation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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