A flaw was found in Undertow. A potential security issue in flow control handling by the browser over HTTP/2 may cause overhead or a denial of service in the server. This flaw exists because of an incomplete fix for CVE-2021-3629.
Conclusion & alert: CVE-2022-1259 is rated Moderate Risk (52.3/100): CVSS High severity, with medium exploitation likelihood (EPSS 0.44%). Mandatory action: Review affected assets and schedule remediation.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-05-24 | 0.27% | 0.44% | +0.17% |
| 2 | 2026-02-07 | 0.24% | 0.27% | +0.03% |
| 3 | 2026-01-19 | — | 0.24% | — |
Full EPSS history (14 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 7.5 | 3.1 | HIGH |
|
3.9 | 3.6 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
unimportant | CVE-2022-1259 unimportant priority: Debian including 1 source packages (undertow), 2 status rows across 2 suites (forky, sid): resolved 2. | https://security-tracker.debian.org/tracker/CVE-2022-1259 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2022-1259 |
ubuntu
|
medium | CVE-2022-1259 medium priority: Ubuntu including 1 source packages (undertow), 13 status rows across 13 suites (bionic, focal, jammy, kinetic, lunar, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): needs-triage 6, DNE 3, ignored 3, not-affected 1. | https://ubuntu.com/security/CVE-2022-1259 |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| redhat | build_of_quarkus | — | cpe:2.3:a:redhat:build_of_quarkus:-:*:*:*:*:*:*:* |
| redhat | integration_camel_k | — | cpe:2.3:a:redhat:integration_camel_k:-:*:*:*:*:*:*:* |
| redhat | jboss_enterprise_application_platform | 7.0.0 | cpe:2.3:a:redhat:jboss_enterprise_application_platform:7.0.0:*:*:*:*:*:*:* |
| redhat | openshift_application_runtimes | — | cpe:2.3:a:redhat:openshift_application_runtimes:-:*:*:*:*:*:*:* |
| redhat | single_sign-on | 7.0 | cpe:2.3:a:redhat:single_sign-on:7.0:*:*:*:*:*:*:* |
| redhat | undertow | <= 2.2.17 | cpe:2.3:a:redhat:undertow:*:*:*:*:*:*:*:* |
| redhat | undertow | 2.2.18 | cpe:2.3:a:redhat:undertow:2.2.18:*:*:*:*:*:*:* |
| redhat | undertow | 2.2.19 | cpe:2.3:a:redhat:undertow:2.2.19:*:*:*:*:*:*:* |
| netapp | active_iq_unified_manager | — | cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:linux:*:* |
| netapp | active_iq_unified_manager | — | cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:vmware_vsphere:*:* |
| netapp | active_iq_unified_manager | — | cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:windows:*:* |
| netapp | cloud_secure_agent | — | cpe:2.3:a:netapp:cloud_secure_agent:-:*:*:*:*:*:*:* |
| netapp | oncommand_insight | — | cpe:2.3:a:netapp:oncommand_insight:-:*:*:*:*:*:*:* |
| netapp | oncommand_workflow_automation | — | cpe:2.3:a:netapp:oncommand_workflow_automation:-:*:*:*:*:*:*:* |
| URL | Tags |
|---|---|
| https://access.redhat.com/security/cve/CVE-2022-1259 | Vendor Advisory |
| https://bugzilla.redhat.com/show_bug.cgi?id=2072339 | Issue Tracking Vendor Advisory |
| https://security.netapp.com/advisory/ntap-20221014-0006/ | Third Party Advisory |