CVE catalog
CVE-2021-3629
DEBIAN-CVE-2021-3629
- Severity
- Medium · CVSS 5.9
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H - Published
- Updated
- Source
- [NVD] · [CVE record]
- EPSS
- 1.32% · Oct 25, 2026
A flaw was found in Undertow. A potential security issue in flow control handling by the browser over http/2 may potentially cause overhead or a denial of service in the server. The highest threat from this vulnerability is availability. This flaw affects Undertow versions prior to 2.0.40.Final and prior to 2.2.11.Final.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | undertow | 14 | 1.3.11-1 | vulnerable |
| Debian | undertow | 14 | 1.3.16-1 | vulnerable |
| Debian | undertow | 14 | 1.3.19-1 | vulnerable |
| Debian | undertow | 14 | 1.3.21-1 | vulnerable |
| Debian | undertow | 14 | 1.3.23-1 | vulnerable |
| Debian | undertow | 14 | 1.3.4-1 | vulnerable |
| Debian | undertow | 14 | 1.3.5-1 | vulnerable |
| Debian | undertow | 14 | 1.3.7-1 | vulnerable |
| Debian | undertow | 14 | 1.4.0-1 | vulnerable |
| Debian | undertow | 14 | 1.4.1-1 | vulnerable |
| Debian | undertow | 14 | 1.4.18-1 | vulnerable |
| Debian | undertow | 14 | 1.4.20-1 | vulnerable |
| Debian | undertow | 14 | 1.4.21-1 | vulnerable |
| Debian | undertow | 14 | 1.4.21-2 | vulnerable |
| Debian | undertow | 14 | 1.4.22-1 | vulnerable |
| Debian | undertow | 14 | 1.4.23-1 | vulnerable |
| Debian | undertow | 14 | 1.4.23-2 | vulnerable |
| Debian | undertow | 14 | 1.4.23-3 | vulnerable |
| Debian | undertow | 14 | 1.4.25-1 | vulnerable |
| Debian | undertow | 14 | 1.4.25-2 | vulnerable |
| Debian | undertow | 14 | 1.4.3-1 | vulnerable |
| Debian | undertow | 14 | 1.4.4-1 | vulnerable |
| Debian | undertow | 14 | 1.4.6-1 | vulnerable |
| Debian | undertow | 14 | 1.4.7-1 | vulnerable |
| Debian | undertow | 14 | 1.4.8-1 | vulnerable |
| Debian | undertow | 14 | 2.0.23-1 | vulnerable |
| Debian | undertow | 14 | 2.0.25-1 | vulnerable |
| Debian | undertow | 14 | 2.0.26-1 | vulnerable |
| Debian | undertow | 14 | 2.0.27-1 | vulnerable |
| Debian | undertow | 14 | 2.0.28-1 | vulnerable |
| Debian | undertow | 14 | 2.0.29-1 | vulnerable |
| Debian | undertow | 14 | 2.0.30-1 | vulnerable |
| Debian | undertow | 14 | 2.1.0-1 | vulnerable |
| Debian | undertow | 14 | 2.1.1-1 | vulnerable |
| Debian | undertow | 14 | 2.1.3-1 | vulnerable |
| Debian | undertow | 14 | 2.2.0-1 | vulnerable |
| Debian | undertow | 14 | 2.2.10-1 | vulnerable |
| Debian | undertow | 14 | 2.2.2-1 | vulnerable |
| Debian | undertow | 14 | 2.2.3-1 | vulnerable |
| Debian | undertow | 14 | 2.2.4-1 | vulnerable |
| Debian | undertow | 14 | 2.2.5-1 | vulnerable |
| Debian | undertow | 14 | 2.2.8-1 | vulnerable |
| Debian | undertow | 14 | 2.2.12-1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | undertow | deb | 14 | 2.2.12-1 | Not reported | DEBIAN-CVE-2021-3629 | Not reported |
OpenFactory catalog packages
No matching packages in this catalog.
Observed: