Description
A flaw was found in the Netty STOMP codec. A remote attacker could send a specially crafted STOMP frame with a content-length header exceeding the maximum integer value. This integer truncation vulnerability could lead to an infinite decode loop, causing a Denial of Service (DoS) by exhausting memory and CPU resources.
Published: 2026-09-18
Score: 7.5 High
EPSS: < 1% Very Low
KEV: No
Impact: Denial of Service (DoS) by memory and CPU exhaustion
Action: Immediate Patch
AI Analysis

Impact

The Netty STOMP codec converts the content‑length header to a 32‑bit integer. A remote attacker can craft a STOMP frame whose content‑length header exceeds the maximum integer value. The integer truncation causes the decoder to enter an infinite loop, repeatedly allocating memory and consuming CPU until the host is exhausted, which results in a denial of Service.

Affected Systems

The vulnerability affects Red Hat Fuse 7, Red Hat JBoss Enterprise Application Platform 7, Red Hat Single Sign‑On 7, and the Red Hat build of Apache Camel for Spring Boot 4. No specific patched versions are listed in the CNA data, but any deployment of the affected Netty STOMP codec components is susceptible.

Risk and Exploitability

The CVSS score of 7.5 indicates a high-impact denial of service. The EPSS score of 0.00409 (less than 1%) shows a very low probability of exploitation, and the issue is not listed in the CISA KEV catalog. The likely attack vector is a remote attacker who can send STOMP frames to the application without authentication. Once exploited, the infinite decode loop will consume server resources, potentially disrupting all other services.

Generated by OpenCVE AI on September 19, 2026 at 18:11 UTC.

Remediation

Vendor Workaround

See https://github.com/netty/netty/security/advisories/GHSA-hmf3-49g9-g7qq for fixed versions and remediation guidance.


OpenCVE Recommended Actions

  • Upgrade to a version of Netty that includes the STOMP content‑length truncation fix, as referenced in the Red Hat advisory and the Netty GitHub security advisory.
  • Apply the corresponding updated Red Hat Fuse 7, JBoss EAP 7, Single Sign‑On 7, and Apache Camel for Spring Boot 4 releases that package the patched Netty library.
  • If an immediate update is not possible, implement a temporary block or filter that rejects STOMP frames with content‑length values exceeding 2,147,483,647, or configure the application firewall to drop such frames.

Generated by OpenCVE AI on September 19, 2026 at 18:11 UTC.

Tracking

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Advisories

No advisories yet.

History

Wed, 23 Sep 2026 15:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Mon, 21 Sep 2026 19:45:00 +0000

Type Values Removed Values Added
First Time appeared Io.netty
Io.netty netty-codec-http
Redhat build Of Apache Camel For Spring Boot
Redhat fuse 7
Redhat single Sign-on
Vendors & Products Io.netty
Io.netty netty-codec-http
Redhat build Of Apache Camel For Spring Boot
Redhat fuse 7
Redhat single Sign-on

Fri, 18 Sep 2026 21:30:00 +0000

Type Values Removed Values Added
Description STOMP codec content-length long-to-int truncation causes infinite decode loop DoS A flaw was found in the Netty STOMP codec. A remote attacker could send a specially crafted STOMP frame with a content-length header exceeding the maximum integer value. This integer truncation vulnerability could lead to an infinite decode loop, causing a Denial of Service (DoS) by exhausting memory and CPU resources.

Fri, 18 Sep 2026 14:00:00 +0000

Type Values Removed Values Added
Title netty: netty-codec-stomp: io.netty/netty-codec-stomp: Netty: STOMP codec content-length long-to-int truncation causes infinite decode loop DoS Io.netty/netty-codec-stomp: netty: stomp codec content-length long-to-int truncation causes infinite decode loop dos
First Time appeared Redhat
Redhat camel Spring Boot
Redhat jboss Enterprise Application Platform
Redhat jboss Fuse
Redhat red Hat Single Sign On
CPEs cpe:/a:redhat:camel_spring_boot:4
cpe:/a:redhat:jboss_enterprise_application_platform:7
cpe:/a:redhat:jboss_fuse:7
cpe:/a:redhat:red_hat_single_sign_on:7
Vendors & Products Redhat
Redhat camel Spring Boot
Redhat jboss Enterprise Application Platform
Redhat jboss Fuse
Redhat red Hat Single Sign On
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}


Fri, 18 Sep 2026 12:15:00 +0000

Type Values Removed Values Added
Description STOMP codec content-length long-to-int truncation causes infinite decode loop DoS
Title netty: netty-codec-stomp: io.netty/netty-codec-stomp: Netty: STOMP codec content-length long-to-int truncation causes infinite decode loop DoS
Weaknesses CWE-1035
References
Metrics threat_severity

None

threat_severity

Moderate


Subscriptions

Io.netty Netty-codec-http
Redhat Build Of Apache Camel For Spring Boot Camel Spring Boot Fuse 7 Jboss Enterprise Application Platform Jboss Fuse Red Hat Single Sign On Single Sign-on
cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2026-09-22T14:26:30.197Z

Reserved: 2026-09-18T09:45:07.908Z

Link: CVE-2026-93560

cve-icon Vulnrichment

Updated: 2026-09-22T14:26:25.454Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-09-18T14:19:08.210

Modified: 2026-09-22T15:17:23.120

Link: CVE-2026-93560

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-09-10T00:43:35Z

Links: CVE-2026-93560 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-09-21T19:25:41Z

Weaknesses