VDB-343089 · CVE-2026-24398 · GHSA-r354-f388-2fhh

honojs hono up to 4.11.6 IP Restrictions src/utils/ipaddr.ts convertIPv4ToBinary incorrect regex

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5.6	$0-$5k	0.00

Summaryinfo

A vulnerability was found in honojs hono up to 4.11.6. It has been classified as problematic. Affected is the function convertIPv4ToBinary of the file src/utils/ipaddr.ts of the component IP Restrictions Handler. Performing a manipulation results in incorrect regex. This vulnerability is cataloged as CVE-2026-24398. It is possible to initiate the attack remotely. There is no exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability classified as problematic has been found in honojs hono up to 4.11.6. This affects the function convertIPv4ToBinary of the file src/utils/ipaddr.ts of the component IP Restrictions Handler. The manipulation with an unknown input leads to a incorrect regex vulnerability. CWE is classifying the issue as CWE-185. The product specifies a regular expression in a way that causes data to be improperly matched or compared. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Hono is a Web application framework that provides support for any JavaScript runtime. Prior to version 4.11.7, IP Restriction Middleware in Hono is vulnerable to an IP address validation bypass. The `IPV4_REGEX` pattern and `convertIPv4ToBinary` function in `src/utils/ipaddr.ts` do not properly validate that IPv4 octet values are within the valid range of 0-255, allowing attackers to craft malformed IP addresses that bypass IP-based access controls. Version 4.11.7 contains a patch for the issue.

The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2026-24398 since 01/22/2026. The exploitability is told to be difficult. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details are known, but no exploit is available.

Upgrading to version 4.11.7 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch edbf6eea8e6c26a3937518d4ed91d8666edeec37 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at CERT Bund (WID-SEC-2026-0574). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Affected

IBM App Connect Enterprise

Productinfo

Vendor

honojs

Name

hono

Version

License

open-source

Website

Product: https://github.com/honojs/hono/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.6
VulDB Meta Temp Score: 5.6

VulDB Base Score: 5.6
VulDB Temp Score: 5.4
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 6.5
NVD Vector: 🔒

CNA Base Score: 4.8
CNA Vector (GitHub_M): 🔒

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Incorrect regex
CWE: CWE-185 / CWE-697
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: hono 4.11.7
Patch: edbf6eea8e6c26a3937518d4ed91d8666edeec37

Timelineinfo

01/22/2026 CVE reserved
01/27/2026 +5 days Advisory disclosed
01/27/2026 +0 days VulDB entry created
03/03/2026 +35 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: GHSA-r354-f388-2fhh
Status: Confirmed

CVE: CVE-2026-24398 (🔒)
GCVE (CVE): GCVE-0-2026-24398
GCVE (VulDB): GCVE-100-343089
CERT Bund: WID-SEC-2026-0574 - IBM App Connect Enterprise: Mehrere Schwachstellen

Entryinfo

Created: 01/27/2026 20:52
Updated: 03/03/2026 12:44
Changes: 01/27/2026 20:52 (69), 02/05/2026 04:47 (11), 03/03/2026 12:44 (7)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.