{"answers":{"affected":"2 open source packages ship an affected version, including io.undertow:undertow-parent. It affects 9 products.","exploited":"There is no known exploitation of CVE-2026-28367 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2026-28367 is a high-severity vulnerability in Redhat Jboss Enterprise Application Platform, published on 27 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-28367 and fix it if it is affected.\n\nWhat it is: CVE-2026-28367 is a high-severity vulnerability in Redhat Jboss Enterprise Application Platform, published on 27 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-28367 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- io.undertow:undertow-parent (Maven): affected all versions up to 2.3.23.Final; no fix listed\n- io.undertow:undertow-parent (Maven): affected all versions up to 2.3.23.Final; no fix listed\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-28367/ (Markdown: https://insights.sbomify.com/CVE-2026-28367/index.md)","id":"CVE-2026-28367","markdown":"https://insights.sbomify.com/CVE-2026-28367/index.md","name":"CVE-2026-28367","record":{"aliases":["DEBIAN-CVE-2026-28367","GHSA-3gv6-g396-9v4r","UBUNTU-CVE-2026-28367"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["security_bypass","data_modify"],"network_reachable":"yes","non_default_config":false,"product_category":"Undertow web server","requires_auth":"none","summary":"Remote attackers can perform request smuggling via malformed header terminators, leading to unauthorized access or request manipulation in Undertow.","user_interaction":"not_required","vuln_class":"other"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"redhat","cpe":[{"product":"build_of_apache_camel_-_hawtio","vendor":"redhat"},{"product":"build_of_apache_camel_for_spring_boot","vendor":"redhat"},{"product":"data_grid","vendor":"redhat"},{"product":"fuse","vendor":"redhat"},{"product":"jboss_enterprise_application_platform","vendor":"redhat"},{"product":"jboss_enterprise_application_platform_expansion_pack","vendor":"redhat"},{"product":"process_automation","vendor":"redhat"},{"product":"single_sign-on","vendor":"redhat"},{"product":"undertow","vendor":"redhat"}],"cvss":{"score":8.7,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N","version":"3.1"},"cwes":[{"id":"CWE-444","name":"Inconsistent Interpretation of HTTP Requests"}],"description":"A flaw was found in Undertow. A remote attacker can exploit this vulnerability by sending `\\r\\r\\r` as a header block terminator. This can be used for request smuggling with certain proxy servers, such as older versions of Apache Traffic Server and Google Cloud Classic Application Load Balancer, potentially leading to unauthorized access or manipulation of web requests.","ecosystems":["Maven"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"Undertow: undertow: request smuggling via `\\r\\r\\r` as a header block terminator","id":"CVE-2026-28367","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Maven","product":"redhat:jboss_enterprise_application_platform","products":["redhat:jboss_enterprise_application_platform","redhat:single_sign-on"],"type":"other","year":"2026"},"n_packages":2,"n_references":4,"next":{"headline":"Undertow: undertow: request smuggling via inconsistent header parsing","id":"CVE-2026-28368"},"packages":[{"ecosystem":"Maven","fixed":[],"introduced":["0"],"last_affected":["2.3.23.Final"],"package":"io.undertow:undertow-parent","purl":null,"source":"GHSA-3gv6-g396-9v4r"},{"ecosystem":"Maven","fixed":[],"introduced":["0"],"last_affected":["2.3.23.Final"],"package":"io.undertow:undertow-parent","purl":"pkg:maven/io.undertow/undertow-parent","source":"GHSA-3gv6-g396-9v4r"}],"prev":{"headline":"Memory corruption in OCaml","id":"CVE-2026-28364"},"products":["Red Hat Data Grid 8","Red Hat Enterprise Linux 10","Red Hat Enterprise Linux 8","Red Hat Enterprise Linux 9","Red Hat Fuse 7","Red Hat JBoss Enterprise Application Platform 7","Red Hat JBoss Enterprise Application Platform 8","Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8","Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9","Red Hat JBoss Enterprise Application Platform 8.1.6","Red Hat JBoss Enterprise Application Platform Expansion Pack","Red Hat Process Automation 7","Red Hat Single Sign-On 7","Red Hat build of Apache Camel - HawtIO 4","Red Hat build of Apache Camel for Spring Boot 4"],"published":"2026-03-27","related":[{"cvss_score":8.7,"headline":"Undertow: undertow: request smuggling via inconsistent header parsing","id":"CVE-2026-28368","kev_date_added":null,"published":"2026-03-27"},{"cvss_score":8.7,"headline":"Undertow: undertow: request smuggling via malformed http request headers","id":"CVE-2026-28369","kev_date_added":null,"published":"2026-03-27"},{"cvss_score":7.5,"headline":"Undertow: improper state management in proxy protocol parsing causes information leakage","id":"CVE-2024-7885","kev_date_added":null,"published":"2024-08-21"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-10-14","vendors":["Red Hat"]},"summary":"Remote attackers can perform request smuggling via malformed header terminators, leading to unauthorized access or request manipulation in Undertow.","url":"https://insights.sbomify.com/CVE-2026-28367/"}