CVE-2021-3597
MEDIUM5.9EPSS 0.17%undertow Race Condition vulnerability
Published: 5/25/2022Modified: 4/28/2026
Description
A flaw was found in undertow. The HTTP2SourceChannel fails to write the final frame under some circumstances, resulting in a denial of service. The highest threat from this vulnerability is availability. This flaw affects Undertow versions prior to 2.0.35.SP1, prior to 2.2.6.SP1, prior to 2.2.7.SP1, prior to 2.0.36.SP1, prior to 2.2.9.Final and prior to 2.0.39.Final.
Affected packages (2)
- Debian/undertowfrom 0, < 2.2.10-1
- Maven/io.undertow:undertow-core>= 2.1.0, < 2.2.9.Final
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.9 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H |