CVE-2021-3629
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.
Does this matter?
Lower severity and a low EPSS score (1.32%). Track it; it rarely justifies an emergency change on its own.
Description
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.
- CVSS 3.1
- 5.9 MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 1.32% probability · 71th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-400
- Affected
- redhat/integration · redhat/jboss enterprise application platform · redhat/single sign-on · redhat/undertow · redhat/wildfly core · netapp/active iq unified manager · netapp/oncommand insight · netapp/oncommand workflow automation
- Source
- secalert@redhat.com
EPSS 1.3% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1977362Issue Tracking, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20220729-0008/Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1977362Issue Tracking, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20220729-0008/Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.