Resource exhaustion in hono - CVE-2026-84364

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Main Vulnerability Database Vulnerabilities #VU146048

Resource exhaustion in hono - CVE-2026-84364

Published: August 28, 2026 / Updated: September 2, 2026


Vulnerability identifier: #VU146048
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-84364
CWE-ID: CWE-400
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to uncontrolled resource consumption in parseBody() when processing request bodies with dot-notation enabled. A remote attacker can send specially crafted requests to cause a denial of service.

Only applications that explicitly enable dot-notation parsing are affected. Concurrent requests can exhaust the JavaScript heap and terminate the server process.


Affected software

hono
IBM App Connect Enterprise

How to mitigate CVE-2026-84364

Install security update from vendor's website.

hono - update to 4.13.5
IBM App Connect Enterprise - update to 13.0.9.0

External References

Related Security Bulletins