High severity7.5NVD Advisory· Published Aug 26, 2022· Updated Jun 17, 2026
CVE-2021-3859
CVE-2021-3859
Description
A flaw was found in Undertow that tripped the client-side invocation timeout with certain calls made over HTTP2. This flaw allows an attacker to carry out denial of service attacks.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
io.undertow:undertow-coreMaven | < 2.2.15 | 2.2.15 |
Affected products
10- cpe:2.3:a:netapp:cloud_secure_agent:-:*:*:*:*:*:*:*
- cpe:2.3:a:netapp:oncommand_insight:-:*:*:*:*:*:*:*
- cpe:2.3:a:netapp:oncommand_workflow_automation:-:*:*:*:*:*:*:*
cpe:2.3:a:redhat:jboss_enterprise_application_platform:7.3:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:redhat:jboss_enterprise_application_platform:7.3:*:*:*:*:*:*:*
- cpe:2.3:a:redhat:jboss_enterprise_application_platform:7.4:*:*:*:*:*:*:*
cpe:2.3:a:redhat:single_sign-on:7.4.10:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:redhat:single_sign-on:7.4.10:*:*:*:*:*:*:*
- cpe:2.3:a:redhat:single_sign-on:7.5.1:*:*:*:*:*:*:*
- Undertow/Undertowdescription
Patches
Vulnerability mechanics
References
11- github.com/undertow-io/undertow/commit/e43f0ada3f4da6e8579e0020cec3cb1a81e487c2nvdPatchThird Party AdvisoryWEB
- issues.redhat.com/browse/UNDERTOW-1979nvdIssue TrackingPatchVendor AdvisoryWEB
- access.redhat.com/security/cve/CVE-2021-3859nvdVendor Advisory
- bugzilla.redhat.com/show_bug.cginvdIssue TrackingVendor AdvisoryWEB
- github.com/advisories/GHSA-339q-62wm-c39wghsaADVISORY
- github.com/undertow-io/undertow/pull/1296nvdThird Party AdvisoryWEB
- nvd.nist.gov/vuln/detail/CVE-2021-3859ghsaADVISORY
- security.netapp.com/advisory/ntap-20221201-0004/nvdThird Party Advisory
- access.redhat.com/security/cve/cve-2021-3859ghsaWEB
- github.com/undertow-io/undertow/commit/db0f5be43f8e2a4b88fbedd2eb6d5a95a29ceaa8ghsaWEB
- security.netapp.com/advisory/ntap-20221201-0004ghsaWEB
News mentions
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