Bug 2505422 (CVE-2026-56746)

Summary:	CVE-2026-56746 io.netty/netty-codec-http: Netty: Security control bypass allows unauthorized requests via null origin header
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security DevOps Team <prodsec-dev>
Status:	NEW ---	QA Contact:
Severity:	high	Docs Contact:
Priority:	high
Version:	unspecified	CC:	aazores, abrianik, anthomas, ant, anujha, aschwart, asoldano, asyoung, aszczucz, ataylor, avibelli, bbaranow, bbrownin, bgeorges, bmaxwell, boliveir, bstansbe, ccranfor, cescoffi, chfoley, cmah, dandread, dbruscin, dhanak, dkreling, dlofthou, drichtar, drosa, dsimansk, eaguilar, ebaron, ehelms, ehugonne, ewittman, fmariani, fmongiar, ggainey, ggrzybek, gmalinko, gsmet, gtanzill, istudens, ivassile, iweiss, janstey, jbuscemi, jhollowa, jmartisk, jmatsuok, jnethert, jpasqual, jpechane, jraez, jtolenti, juwatts, jwon, kaycoth, kgaikwad, kingland, kvanderr, lthon, manderse, mcarlett, mdellweg, mhulan, mnovotny, mosmerov, mposolda, msvehla, nipatil, nmoumoul, nwallace, olubyans, osousa, pantinor, parichar, pberan, pcreech, pesilva, pgallagh, pjindal, pmackay, prichard, probinso, rchan, rgodfrey, rguimara, rkubis, rmartinc, rruss, rstancel, rstepani, rsvoboda, sausingh, sbiarozk, sdawley, smallamp, ssilvert, sthirugn, sthorger, swoodman, tasato, tcunning, thjenkin, tmalecek, tqvarnst, vdosoudi, vmuzikar, yfang
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	---
Doc Text:	A flaw was found in Netty, a network application framework. A remote attacker can bypass security controls in the `CorsHandler` component by sending a specially crafted request with a null origin header. This bypasses the intended access restrictions, allowing unauthorized requests to reach the backend application. This could lead to a compromise of data integrity by allowing unauthorized actions.	Story Points:	---
Clone Of:		Environment:
Last Closed:		Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description OSIDB Bzimport 2026-07-21 22:30:53 UTC

Netty is a network application framework for development of protocol servers and clients. Versions 4.2.0.Final through 4.2.15.Final and 4.1.0.Final through 4.1.135.Final, are vulnerable to security control bypass during the origin evaluation process. CorsHandler provides a shortCircuit() configuration designed to reject unauthorized cross-origin requests immediately, acting as a security control before requests reach the application. However, due to a logical operator error in the origin evaluation process, this protection can be entirely bypassed. An attacker can bypass the short-circuit mechanism by sending a request with an Origin: null header. This failure forwards unauthorized requests to the backend application, bypassing intended access controls. This issue is fixed in versions 4.1.136.Final and 4.2.16.Final.

Comment 1 errata-xmlrpc 2026-07-30 07:45:24 UTC

This issue has been addressed in the following products:

  Red Hat Build of Apache Camel 4.18 for Quarkus 3.33

Via RHSA-2026:48118 https://access.redhat.com/errata/RHSA-2026:48118

Comment 2 errata-xmlrpc 2026-08-13 14:51:20 UTC

This issue has been addressed in the following products:

  Red Hat build of Apache Camel 4.18.3 for Spring Boot 3.5.16

Via RHSA-2026:54622 https://access.redhat.com/errata/RHSA-2026:54622

Comment 3 errata-xmlrpc 2026-09-10 16:37:43 UTC

This issue has been addressed in the following products:

  Red Hat AMQ Broker 7.14.1

Via RHSA-2026:66488 https://access.redhat.com/errata/RHSA-2026:66488

Comment 4 errata-xmlrpc 2026-09-10 23:25:50 UTC

This issue has been addressed in the following products:

  Red Hat AMQ Broker 7.13.6

Via RHSA-2026:66545 https://access.redhat.com/errata/RHSA-2026:66545

Comment 5 Jon Orris 2026-09-16 17:17:11 UTC

This issue has been addressed in the following products:

  Cryostat 4 on RHEL 9

Via RHSA-2026:68333 https://access.redhat.com/errata/RHSA-2026:68333

Comment 6 Jon Orris 2026-09-21 12:20:07 UTC

This issue has been addressed in the following products:

  Red Hat Data Grid 8.6.3

Via RHSA-2026:69296 https://access.redhat.com/errata/RHSA-2026:69296

Comment 7 Jon Orris 2026-09-22 12:57:13 UTC

This issue has been addressed in the following products:

  Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8

Via RHSA-2026:70228 https://access.redhat.com/errata/RHSA-2026:70228

Comment 8 Jon Orris 2026-09-22 12:59:40 UTC

This issue has been addressed in the following products:

  Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10

Via RHSA-2026:70230 https://access.redhat.com/errata/RHSA-2026:70230

Comment 9 Jon Orris 2026-09-22 13:01:51 UTC

This issue has been addressed in the following products:

  Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9

Via RHSA-2026:70229 https://access.redhat.com/errata/RHSA-2026:70229

Comment 10 Jon Orris 2026-09-22 15:36:49 UTC

This issue has been addressed in the following products:

  Red Hat JBoss Enterprise Application Platform 8.1

Via RHSA-2026:70277 https://access.redhat.com/errata/RHSA-2026:70277