{"answers":{"affected":"4 open source packages ship an affected version, including io.undertow:undertow-core. It affects 8 products.","exploited":"There is no known exploitation of CVE-2025-9784 in the wild and no public exploit code.","fix":"Upgrade io.undertow:undertow-core to a fixed version for your release line: 2.2.38.Final or 2.3.20.Final.","what":"CVE-2025-9784 is a high-severity denial of service vulnerability in Redhat Enterprise Linux, published on 2 Sep 2025. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2025-9784 and fix it if it is affected.\n\nWhat it is: CVE-2025-9784 is a high-severity denial of service vulnerability in Redhat Enterprise Linux, published on 2 Sep 2025. 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-2025-9784 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- io.undertow:undertow-core (Maven): affected all versions; fixed in 2.2.38.Final\n- io.undertow:undertow-core (Maven): affected all versions; fixed in 2.2.38.Final\n- io.undertow:undertow-core (Maven): affected from 2.3.0.Alpha1; fixed in 2.3.20.Final\n- io.undertow:undertow-core (Maven): affected from 2.3.0.Alpha1; fixed in 2.3.20.Final\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-2025-9784/ (Markdown: https://insights.sbomify.com/CVE-2025-9784/index.md)","id":"CVE-2025-9784","markdown":"https://insights.sbomify.com/CVE-2025-9784/index.md","name":"CVE-2025-9784","record":{"aliases":["CLSA-2026-1788890118","CLSA-2026-1789456491","DEBIAN-CVE-2025-9784","GHSA-95h4-w6j8-2rp8","UBUNTU-CVE-2025-9784"],"analysis":{"component_type":"server_software","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Undertow web server","requires_auth":"none","summary":"Malicious clients can cause denial of service in Undertow by triggering excessive server-side stream resets without hitting abuse counters.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"redhat","cpe":[{"product":"build_of_apache_camel_for_spring_boot","vendor":"redhat"},{"product":"enterprise_linux","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":7.5,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-404","name":"Improper Resource Shutdown or Release"},{"id":"CWE-770","name":"Allocation of Resources Without Limits or Throttling"}],"description":"A flaw was found in Undertow where malformed client requests can trigger server-side stream resets without triggering abuse counters. This issue, referred to as the \"MadeYouReset\" attack, allows malicious clients to induce excessive server workload by repeatedly causing server-side stream aborts. While not a protocol bug, this highlights a common implementation weakness that can be exploited to cause a denial of service (DoS).","ecosystems":["Maven"],"exploits":{"exploitdb":0,"first_seen":"2025-09-02","github_poc":1,"max_poc_stars":2,"metasploit":0,"nuclei":0,"refs":[{"date":"2025-09-02T17:21:52Z","kind":"github_poc","ref":"https://github.com/drackyjr/CVE-2025-9784","stars":2,"title":null}],"tier":"poc_unverified"},"has_fix":true,"headline":"Undertow: undertow madeyoureset http/2 ddos vulnerability","id":"CVE-2025-9784","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Maven","product":"redhat:enterprise_linux","products":["redhat:enterprise_linux","redhat:jboss_enterprise_application_platform","redhat:single_sign-on"],"type":"denial_of_service","year":"2025"},"n_packages":4,"n_references":24,"next":{"headline":"Misconfigured certificate validation with self-signed certificates for Print Deploy","id":"CVE-2025-9785"},"packages":[{"ecosystem":"Maven","fixed":["2.2.38.Final"],"introduced":["0"],"last_affected":[],"package":"io.undertow:undertow-core","purl":null,"source":"GHSA-95h4-w6j8-2rp8"},{"ecosystem":"Maven","fixed":["2.2.38.Final"],"introduced":["0"],"last_affected":[],"package":"io.undertow:undertow-core","purl":"pkg:maven/io.undertow/undertow-core","source":"GHSA-95h4-w6j8-2rp8"},{"ecosystem":"Maven","fixed":["2.3.20.Final"],"introduced":["2.3.0.Alpha1"],"last_affected":[],"package":"io.undertow:undertow-core","purl":null,"source":"GHSA-95h4-w6j8-2rp8"},{"ecosystem":"Maven","fixed":["2.3.20.Final"],"introduced":["2.3.0.Alpha1"],"last_affected":[],"package":"io.undertow:undertow-core","purl":"pkg:maven/io.undertow/undertow-core","source":"GHSA-95h4-w6j8-2rp8"}],"prev":{"headline":"TOTOLINK A702R formParentControl sub_418030 buffer overflow","id":"CVE-2025-9783"},"products":["RHEL-8 based Middleware Containers","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 7.1 EUS for RHEL 7","Red Hat JBoss Enterprise Application Platform 7.3 EUS for RHEL 7","Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7","Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 8","Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 9","Red Hat JBoss Enterprise Application Platform 7.4.24","Red Hat JBoss Enterprise Application Platform 8","Red Hat JBoss Enterprise Application Platform 8.0","Red Hat JBoss Enterprise Application Platform 8.0 for RHEL 8","Red Hat JBoss Enterprise Application Platform 8.0 for RHEL 9","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 8.1.3","Red Hat JBoss Enterprise Application Platform Expansion Pack","Red Hat Process Automation 7","Red Hat Single Sign-On 7.6 for RHEL 7","Red Hat Single Sign-On 7.6 for RHEL 8","Red Hat Single Sign-On 7.6 for RHEL 9","Red Hat Single Sign-On 7.6.13","Red Hat build of Apache Camel - HawtIO 4","Red Hat build of Apache Camel 4.14.2 for Spring Boot 3.5.8"],"published":"2025-09-02","related":[],"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)"},{"class":"open","licence":"CC0","name":"PoC-in-GitHub"}],"ssvc":{"automatable":"yes","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-10-14","vendors":["Red Hat"]},"summary":"Malicious clients can cause denial of service in Undertow by triggering excessive server-side stream resets without hitting abuse counters.","url":"https://insights.sbomify.com/CVE-2025-9784/"}