{"document":{"aggregate_severity":{"namespace":"https://www.suse.com/support/security/rating/","text":"moderate"},"category":"csaf_vex","csaf_version":"2.0","distribution":{"text":"Copyright 2024 SUSE LLC. All rights reserved.","tlp":{"label":"WHITE","url":"https://www.first.org/tlp/"}},"lang":"en","notes":[{"category":"summary","text":"SUSE CVE-2026-56746","title":"Title"},{"category":"description","text":"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.","title":"Description of the CVE"},{"category":"legal_disclaimer","text":"CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).","title":"Terms of use"}],"publisher":{"category":"vendor","contact_details":"https://www.suse.com/support/security/contact/","name":"SUSE Product Security Team","namespace":"https://www.suse.com/"},"references":[{"category":"external","summary":"CVE-2026-56746","url":"https://www.suse.com/security/cve/CVE-2026-56746"},{"category":"external","summary":"SUSE Security Ratings","url":"https://www.suse.com/support/security/rating/"},{"category":"external","summary":"SUSE Bug 1272255 for CVE-2026-56746","url":"https://bugzilla.suse.com/1272255"},{"category":"external","summary":"Advisory link for SUSE-SU-2026:3482-1","url":"https://lists.suse.com/pipermail/sle-security-updates/2026-August/028141.html"}],"title":"SUSE CVE CVE-2026-56746","tracking":{"current_release_date":"2026-08-05T00:35:45Z","generator":{"date":"2026-07-22T16:25:41Z","engine":{"name":"cve-database.git:bin/generate-csaf-vex.pl","version":"1"}},"id":"CVE-2026-56746","initial_release_date":"2026-07-22T16:25:41Z","revision_history":[{"date":"2026-07-22T16:25:41Z","number":"2","summary":"references added,severity changed from  to moderate"},{"date":"2026-07-24T02:16:41Z","number":"3","summary":"vulnerabilities added"},{"date":"2026-07-31T00:15:46Z","number":"4","summary":"scores added,updates released,updates entered QA"},{"date":"2026-08-05T00:35:45Z","number":"5","summary":"more updates released,references added"}],"status":"interim","version":"5"}},"product_tree":{"branches":[{"branches":[{"branches":[{"category":"product_name","name":"SUSE Linux Enterprise Desktop 15 SP7","product":{"name":"SUSE Linux Enterprise Desktop 15 SP7","product_id":"SUSE Linux Enterprise Desktop 15 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Page","text":"https://www.suse.com/security/cve/CVE-2026-56746"}],"notes":[{"category":"general","text":"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.","title":"CVE description"}],"product_status":{"known_not_affected":["SUSE Linux Enterprise Desktop 15 SP7:netty-tcnative","SUSE Linux Enterprise Desktop 15 SP7:netty3","SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS:netty-tcnative","SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS:netty3","SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS:netty-tcnative","SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS:netty3","SUSE Linux Enterprise High Performance Computing 15 SP7:netty-tcnative","SUSE Linux Enterprise High Performance Computing 15 SP7:netty3","SUSE Linux Enterprise Module for Development Tools 15 SP7:netty-tcnative","SUSE Linux Enterprise Module for Development Tools 15 SP7:netty3","SUSE Linux Enterprise Server 15 SP2-LTSS:netty-tcnative","SUSE Linux Enterprise Server 15 SP2-LTSS:netty3","SUSE Linux Enterprise Server 15 SP2:netty-tcnative","SUSE Linux Enterprise Server 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