{"id":"CVE-2024-3653","aliases":["GHSA-ch7q-gpff-h9hp"],"url":"https://o3.security/vulnerability/CVE-2024-3653","summary":"Undertow: learningpushhandler can lead to remote memory dos attacks","details":"A vulnerability was found in Undertow. This issue requires enabling the learning-push handler in the server's config, which is disabled by default, leaving the maxAge config in the handler unconfigured. The default is -1, which makes the handler vulnerable. If someone overwrites that config, the server is not subject to the attack. The attacker needs to be able to reach the server with a normal HTTP request.","published":"2024-07-08T21:21:20.899Z","modified":"2026-09-10T03:31:07.615094295Z","cvss":{"score":5.3,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"},"epss":{"score":0.01866,"percentile":0.77393,"asOf":"2026-08-23"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Maven","name":"io.undertow:undertow-core","fixedVersion":"2.3.15.Final"},{"ecosystem":"Maven","name":"io.undertow:undertow-core","fixedVersion":"2.2.34.Final"}],"fix":{"url":"https://github.com/undertow-io/undertow/pull/1639","label":"undertow-io/undertow#1639"},"references":[{"type":"WEB","url":"https://access.redhat.com/downloads/content/package-browser/"},{"type":"WEB","url":"https://access.redhat.com/jbossnetwork/restricted/listSoftware.html"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2024:4392"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2024:5143"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2024:5144"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2024:5145"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2024:5147"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2024:6437"},{"type":"ADVISORY","url":"https://access.redhat.com/security/cve/CVE-2024-3653"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/3xxx/CVE-2024-3653.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-3653"},{"type":"ADVISORY","url":"https://security.netapp.com/advisory/ntap-20240828-0002/"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2274437"},{"type":"PACKAGE","url":"https://github.com/undertow-io/undertow"},{"type":"WEB","url":"https://github.com/undertow-io/undertow/pull/1639"},{"type":"WEB","url":"https://github.com/undertow-io/undertow/pull/1640"},{"type":"WEB","url":"https://github.com/undertow-io/undertow/pull/1641"},{"type":"WEB","url":"https://issues.redhat.com/browse/UNDERTOW-2382"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-09-10T03:31:07.615094295Z"}}