{"id":"CVE-2024-3884","aliases":[],"url":"https://o3.security/vulnerability/CVE-2024-3884","summary":"Undertow OutOfMemory when parsing form data encoding with application/x-www-form-urlencoded","details":"A flaw was found in Undertow that can cause remote denial of service attacks. When the server uses the FormEncodedDataDefinition.doParse(StreamSourceChannel) method to parse large form data encoding with application/x-www-form-urlencoded, the method will cause an OutOfMemory issue. This flaw allows unauthorized users to cause a remote denial of service (DoS) attack.","published":"2025-12-03T21:31:04Z","modified":"2026-09-10T03:50:31.761273365Z","cvss":{"score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},"epss":{"score":0.01379,"percentile":0.70006,"asOf":"2026-08-24"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Maven","name":"io.undertow:undertow-core","fixedVersion":"2.2.39.Final"},{"ecosystem":"Maven","name":"io.undertow:undertow-core","fixedVersion":"2.4.0.Beta1"},{"ecosystem":"Maven","name":"io.undertow:undertow-core","fixedVersion":"2.3.21.Final"}],"fix":{"url":"https://github.com/undertow-io/undertow/pull/1894","label":"undertow-io/undertow#1894"},"references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-3884"},{"type":"WEB","url":"https://github.com/undertow-io/undertow/pull/1894"},{"type":"WEB","url":"https://github.com/undertow-io/undertow/pull/1882"},{"type":"WEB","url":"https://github.com/undertow-io/undertow/pull/1860"},{"type":"WEB","url":"https://github.com/undertow-io/undertow/pull/1856"},{"type":"WEB","url":"https://github.com/undertow-io/undertow/commit/cb854c779b9e2368c3c274ebd7217c8e75d505be"},{"type":"WEB","url":"https://github.com/undertow-io/undertow/releases/tag/2.4.0.Beta1"},{"type":"WEB","url":"https://github.com/undertow-io/undertow/releases/tag/2.3.21.Final"},{"type":"WEB","url":"https://github.com/undertow-io/undertow/releases/tag/2.2.39.Final"},{"type":"PACKAGE","url":"https://github.com/undertow-io/undertow"},{"type":"WEB","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2275287"},{"type":"WEB","url":"https://access.redhat.com/security/cve/CVE-2024-3884"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:6012"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:6011"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:4924"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:4917"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:4916"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:4915"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:3892"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:3891"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:3889"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:0386"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:0384"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:0383"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2025:3992"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2025:3990"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2025:22777"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2025:22775"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2025:22773"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-09-10T03:50:31.761273365Z"}}