{"cve":"CVE-2024-3884","nvd":{"published":"2025-12-03T19:15:54.767","modified":"2026-10-14T18:17:06.873","status":"Deferred","description":"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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5},"cwes":["CWE-20"],"references":["https://access.redhat.com/errata/RHSA-2026:0383","https://access.redhat.com/errata/RHSA-2026:0384","https://access.redhat.com/errata/RHSA-2026:0386","https://access.redhat.com/errata/RHSA-2026:3889","https://access.redhat.com/errata/RHSA-2026:3891"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:16:40.427100871+00:00"},"epss":{"cve":"CVE-2024-3884","score":0.01359,"percentile":0.71501,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-6h4f-pj3g-q8fq","url":"https://osv.dev/vulnerability/GHSA-6h4f-pj3g-q8fq","summary":"Undertow OutOfMemory when parsing form data encoding with application/x-www-form-urlencoded","modified":"2026-09-10T03:50:31.761273365Z","packages":[{"ecosystem":"Maven","name":"io.undertow:undertow-core","purl":"pkg:maven/io.undertow/undertow-core","ranges":["<2.2.39.Final"],"fixed":["2.2.39.Final"]},{"ecosystem":"Maven","name":"io.undertow:undertow-core","purl":"pkg:maven/io.undertow/undertow-core","ranges":[">=2.4.0.Alpha1 <2.4.0.Beta1"],"fixed":["2.4.0.Beta1"]},{"ecosystem":"Maven","name":"io.undertow:undertow-core","purl":"pkg:maven/io.undertow/undertow-core","ranges":[">=2.3.0.Alpha1 <2.3.21.Final"],"fixed":["2.3.21.Final"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}