Maven/io.undertow:undertow-core CVE-2025-9784: high 7.5, EPSS 2.33%
Undertow MadeYouReset HTTP/2 DDoS Vulnerability
Action: Upgrade io.undertow:undertow-core to 2.2.38.Final (2.2.x) or 2.3.20.Final (2.3.x) or later.
Affected
| introduced | fixed | last affected |
|---|---|---|
| 0 | 2.2.38.Final | - |
| 2.3.0.Alpha1 | 2.3.20.Final | - |
Fixed versions
| 2.2.38.Final | 2.3.20.Final |
Sources
- osv: GHSA-95h4-w6j8-2rp8
- https://nvd.nist.gov/vuln/detail/CVE-2025-9784
- https://github.com/undertow-io/undertow/pull/1805
- https://github.com/undertow-io/undertow/pull/1804
- https://github.com/undertow-io/undertow/pull/1803
- https://github.com/undertow-io/undertow/pull/1802
- https://github.com/undertow-io/undertow/pull/1778
- https://www.kb.cert.org/vuls/id/767506
- https://kb.cert.org/vuls/id/767506
- https://issues.redhat.com/browse/UNDERTOW-2598
- https://github.com/undertow-io/undertow/releases/tag/2.2.38.Final
- https://github.com/undertow-io/undertow
- https://bugzilla.redhat.com/show_bug.cgi?id=2392306
- https://access.redhat.com/security/cve/CVE-2025-9784
- https://access.redhat.com/errata/RHSA-2026:76134
- https://access.redhat.com/errata/RHSA-2026:76132
- https://access.redhat.com/errata/RHSA-2026:4924
- https://access.redhat.com/errata/RHSA-2026:4917
- https://access.redhat.com/errata/RHSA-2026:4916
- https://access.redhat.com/errata/RHSA-2026:4915
- https://access.redhat.com/errata/RHSA-2026:3892
- https://access.redhat.com/errata/RHSA-2026:3891
- https://access.redhat.com/errata/RHSA-2026:3889
- https://access.redhat.com/errata/RHSA-2026:33372
- https://access.redhat.com/errata/RHSA-2026:33371
- https://access.redhat.com/errata/RHSA-2026:0386
- https://access.redhat.com/errata/RHSA-2026:0384
- https://access.redhat.com/errata/RHSA-2026:0383
- https://access.redhat.com/errata/RHSA-2025:23143
CVE-2025-9784 · published · modified · JSON