{"id":"CVE-2025-9784","title":"A flaw was found in Undertow where malformed client requests can trigger server-side stream resets without triggering abuse counters","summary":"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 serv…","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-770","CWE-404"],"vendor":"redhat","product":"build_of_apache_camel_for_spring_boot","affected":["build_of_apache_camel_for_spring_boot","fuse = 7.0.0","jboss_enterprise_application_platform = 7.0.0","jboss_enterprise_application_platform = 8.0.0","jboss_enterprise_application_platform_expansion_pack","process_automation = 7.0","single_sign-on = 7.0","undertow","enterprise_linux = 8.0","enterprise_linux = 9.0"],"patched":["io.undertow:undertow-core 2.2.38.Final","io.undertow:undertow-core 2.3.20.Final"],"published":"2025-09-02","updated":"2026-10-14","sourceUpdated":"2026-10-14T17:17:41.947","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2025-9784","references":[{"url":"https://access.redhat.com/errata/RHSA-2025:23143","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:0383","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:0384","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:0386","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:33371","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:33372","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:3889","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:3891","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:3892","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:4915","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:4916","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:4917","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:4924","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:76128","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:76129","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:76130","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:76132","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:76134","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/security/cve/CVE-2025-9784","label":"secalert@redhat.com"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2392306","label":"secalert@redhat.com"},{"url":"https://github.com/undertow-io/undertow/pull/1778","label":"secalert@redhat.com"},{"url":"https://github.com/undertow-io/undertow/releases/tag/2.2.38.Final","label":"secalert@redhat.com"},{"url":"https://issues.redhat.com/browse/UNDERTOW-2598","label":"secalert@redhat.com"},{"url":"https://kb.cert.org/vuls/id/767506","label":"secalert@redhat.com"},{"url":"https://www.kb.cert.org/vuls/id/767506","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-9784"},{"url":"https://github.com/undertow-io/undertow/pull/1802"},{"url":"https://github.com/undertow-io/undertow/pull/1803"},{"url":"https://github.com/undertow-io/undertow/pull/1804"},{"url":"https://github.com/undertow-io/undertow/pull/1805"},{"url":"https://github.com/advisories/GHSA-95h4-w6j8-2rp8"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-9784.json"},{"url":"https://www.cve.org/CVERecord?id=CVE-2025-9784"}],"tags":["nvd","exploit-available","cve.org","ghsa","maven","csaf","vex","red-hat"],"epss":0.02325,"epssPercentile":0.8341,"exploits":{"github":1,"githubRepos":["https://github.com/drackyjr/CVE-2025-9784"],"checkedAt":"2026-10-27T16:50:04.624Z"},"exploitAvailable":true,"aliases":["GHSA-95h4-w6j8-2rp8"],"ecosystem":"maven","ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"partial","timestamp":"2025-09-02T13:55:22.694531Z"},"ingestedAt":"2026-06-29T13:24:34.407Z","slug":"CVE-2025-9784","body":"## Overview\n\nA 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).\n\n## Affected\n\n- `build_of_apache_camel_for_spring_boot`\n- `fuse = 7.0.0`\n- `jboss_enterprise_application_platform = 7.0.0`\n- `jboss_enterprise_application_platform = 8.0.0`\n- `jboss_enterprise_application_platform_expansion_pack`\n- `process_automation = 7.0`\n- `single_sign-on = 7.0`\n- `undertow`\n- `enterprise_linux = 8.0`\n- `enterprise_linux = 9.0`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Package advisory (CVE-2025-9784)\n\nAffected packages:\n\n- `io.undertow:undertow-core < 2.2.38.Final`\n- `io.undertow:undertow-core >= 2.3.0.Alpha1, < 2.3.20.Final`\n\nPatched in:\n\n- `io.undertow:undertow-core 2.2.38.Final`\n- `io.undertow:undertow-core 2.3.20.Final`\n\nSource: https://github.com/advisories/GHSA-95h4-w6j8-2rp8\n\n## Vendor advisories\n\n- **RHSA-2026:33372** · Red Hat · fixed in: Red Hat JBoss Enterprise Application Platform 7.1 EUS for RHEL 7 Server · released 2026-06-30 · [advisory](https://access.redhat.com/errata/RHSA-2026:33372)\n- **RHSA-2026:33371** · Red Hat · fixed in: Red Hat JBoss Enterprise Application Platform 7.3 EUS for RHEL 7 Server · released 2026-06-30 · [advisory](https://access.redhat.com/errata/RHSA-2026:33371)\n- **RHSA-2026:4915** · Red Hat · fixed in: Red Hat JBoss EAP 7.4 ELS for RHEL 7 Server · released 2026-03-18 · [advisory](https://access.redhat.com/errata/RHSA-2026:4915)\n- **RHSA-2026:4916** · Red Hat · fixed in: Red Hat JBoss EAP 7.4 ELS for RHEL 8 · released 2026-03-18 · [advisory](https://access.redhat.com/errata/RHSA-2026:4916)\n- **RHSA-2026:3889** · Red Hat · fixed in: Red Hat JBoss EAP 8.0 for RHEL 8 · released 2026-03-05 · [advisory](https://access.redhat.com/errata/RHSA-2026:3889)\n- **RHSA-2026:0383** · Red Hat · fixed in: Red Hat JBoss EAP 8.1 for RHEL 8 · released 2026-01-08 · [advisory](https://access.redhat.com/errata/RHSA-2026:0383)\n- **RHSA-2026:76134** · Red Hat · fixed in: Middleware Containers for OpenShift · released 2026-10-05 · [advisory](https://access.redhat.com/errata/RHSA-2026:76134)\n- **RHSA-2026:4917** · Red Hat · fixed in: Red Hat JBoss EAP 7.4 ELS for RHEL 9 · released 2026-03-18 · [advisory](https://access.redhat.com/errata/RHSA-2026:4917)\n- **RHSA-2026:3891** · Red Hat · fixed in: Red Hat JBoss EAP 8.0 for RHEL 9 · released 2026-03-05 · [advisory](https://access.redhat.com/errata/RHSA-2026:3891)\n- **RHSA-2026:0384** · Red Hat · fixed in: Red Hat JBoss EAP 8.1 for RHEL 9 · released 2026-01-08 · [advisory](https://access.redhat.com/errata/RHSA-2026:0384)\n- **RHSA-2026:4924** · Red Hat · fixed in: Red Hat JBoss Enterprise Application Platform 7.4.24 · released 2026-03-18 · [advisory](https://access.redhat.com/errata/RHSA-2026:4924)\n- **Red Hat VEX** · Important · affected: Red Hat Data Grid 8, Red Hat Fuse 7, Red Hat JBoss Enterprise Application Platform 7, Red Hat JBoss Enterprise Application Platform Expansion Pack, Red Hat Process Automation 7 · no fix planned: Red Hat Data Grid 8, Red Hat Fuse 7, Red Hat Process Automation 7, Red Hat JBoss Enterprise Application Platform 7, … · updated 2026-10-05 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-9784.json)","depth":"midnight","depthScore":54,"depthScoreParts":{"impact":41.3,"likelihood":0.5,"exploitation":12,"ransomware":0},"changes":[{"seq":4876,"id":"CVE-2025-9784","ts":1788887212835,"field":"exploit_available","old":"false","new":"true"},{"seq":3759,"id":"CVE-2025-9784","ts":1788886329458,"field":"exploit_available","old":"true","new":"false"},{"seq":2604,"id":"CVE-2025-9784","ts":1788883010529,"field":"exploit_available","old":"false","new":"true"},{"seq":1633,"id":"CVE-2025-9784","ts":1788882410837,"field":"exploit_available","old":"true","new":"false"},{"seq":743,"id":"CVE-2025-9784","ts":1788881848052,"field":"exploit_available","old":"false","new":"true"}]}