Overly permissive cross-domain whitelist in hono - CVE-2026-54290

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Main Vulnerability Database Vulnerabilities #VU138950

Overly permissive cross-domain whitelist in hono - CVE-2026-54290

Published: July 21, 2026


Vulnerability identifier: #VU138950
CSH Severity: High
CVSS v4: 7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-54290
CWE-ID: CWE-942
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to bypass the CORS protection mechanism.

The vulnerability exists due to incorrect processing of the "Origin" HTTP header that is supplied within HTTP request. A remote attacker can supply arbitrary value via the "Origin" HTTP header, bypass implemented CORS protection mechanism and perform cross-site scripting attacks against the vulnerable application.


Affected software

hono
Informix Dynamic Server
IBM App Connect Enterprise

How to mitigate CVE-2026-54290

Install updates from vendor's website.

hono - update to 4.12.25
Informix Dynamic Server - addressed in versions 14.10.FC14, 15.0.1.14
IBM App Connect Enterprise - update to 13.0.8.0

External References

Related Security Bulletins