CVE-2025-58362Network attack vector

Unauthorized endpoint access via fixed-offset URL parsing

Published Sep 4, 2025 · Updated Sep 5, 2025

Path confusion in Hono 4.8.0 through 4.9.5 allows remote attackers to bypass proxy ACLs via malformed absolute-form request URIs. The getPath utility uses fixed offsets to locate the path in a request URL, so malformed scheme and authority layouts shift extraction to the wrong slash. Exposure requires an environment that accepts the malformed URI and relies on proxy ACLs to protect a sensitive endpoint; successful requests disclose endpoint data without authorization.

CVSS severity7.5
High
EPSS probability0.53%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path confusion in Hono 4.8.0 through 4.9.5 allows remote attackers to bypass proxy ACLs via malformed absolute-form request URIs. The getPath utility uses fixed offsets to locate the path in a request URL, so malformed scheme and authority layouts shift extraction to the wrong slash. Exposure requires an environment that accepts the malformed URI and relies on proxy ACLs to protect a sensitive endpoint; successful requests disclose endpoint data without authorization.

The record

CVE
CVE-2025-58362
Published
Sep 4, 2025
Updated
Sep 5, 2025
Vendor
Hono
Product
Hono
Classifications
CWE-706, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 4, 2025CVE publishedPublication date reported by the CVE source.
  2. Sep 5, 2025Record 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=>= 4.8.0, < 4.9.6

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Hono · Honoversion=>= 4.8.0, < 4.9.6

Published CVSS scores

7.5GitHubCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-706Use of Incorrectly-Resolved Name or Reference
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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