How severe is CVE-2019-14888?

CVE-2019-14888 has a CVSS score of 7.5/10, rated HIGH. Immediate patching is strongly recommended.

Which packages are affected by CVE-2019-14888?

CVE-2019-14888 affects the following packages: io.undertow:undertow-core (Maven). Ecosystems affected: Maven.

How do I fix CVE-2019-14888?

Update io.undertow:undertow-core to 2.0.29.Final or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2019-14888 is resolved across your whole dependency graph.

How do I detect CVE-2019-14888 in my Maven dependencies?

Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for io.undertow:undertow-core, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

How do I mitigate CVE-2019-14888 if there is no patch (or I can't update yet)?

Cap what an attacker can consume: apply request size, rate and timeout limits in front of the affected component, and run it with memory and CPU limits so exhaustion degrades one worker rather than the whole service.

Is CVE-2019-14888 actively exploited in the wild?

No public exploit code has been indexed for CVE-2019-14888 yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

What is the EPSS score for CVE-2019-14888?

CVE-2019-14888 has an EPSS (Exploit Prediction Scoring System) score of 2.2%, placing it in the 83th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. This score indicates relatively lower exploitation probability, though the CVSS severity should still guide your patching priority.

What type of vulnerability is CVE-2019-14888?

CVE-2019-14888 is classified as Uncontrolled Resource Consumption (CWE-400). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation.

When was CVE-2019-14888 published, and has it been updated?

CVE-2019-14888 was published on January 23, 2020 and was last updated on October 24, 2026. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

☕

☕ Maven

Not in CISA KEV

HIGH severity

CVE-2019-14888 — undertow-core

HIGH

CVE-2019-14888 is a high-severity (CVSS 7.5) Uncontrolled Resource Consumption vulnerability in io.undertow:undertow-core. A fix is available for io.undertow:undertow-core — see the affected versions and patch details below.

Undertow vulnerable to Uncontrolled Resource Consumption

Also known asGHSA-vjxc-frw4-jmh5

Published

Jan 23, 2020

Updated

Oct 24, 2026

Affected

1 pkg

Patched

1 / 1

Exploits

None indexed

Exploitation data as of Nov 11, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗

2.2%probability of exploitation in next 30 days

Lower Risk0.00%

Lower risk than most CVEs83th percentile — riskier than 83% of all scored CVEsHighest risk

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

1 pkg affected

☕io.undertow:undertow-core

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Maven packages — download data is not available via public APIs for these ecosystems.

Description

A vulnerability was found in the Undertow HTTP server in versions before 2.0.28.SP1 when listening on HTTPS. An attacker can target the HTTPS port to carry out a Denial Of Service (DOS) to make the service unavailable on SSL.

Affected Packages

1 total 1 fixed

Ecosystem	Package	Vulnerable range	Fix
☕Maven	`io.undertow:undertow-core`	all versions	2.0.29.Final`io.undertow:undertow-core:2.0.29.Final`

Affected Products

6 products · 10 configurations

Application

active iq unified managernetapp

all

Application

jboss data gridredhat

1 version

7.0.0

Application

jboss enterprise application platformredhat

1 version

7.0.0

Application

jboss fuseredhat

2 versions

6.0.07.0.0

Application

single sign-onredhat

1 version

7.0

Application

undertowredhat

≤ 2.0.28

range

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for io.undertow:undertow-core, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update io.undertow:undertow-core to 2.0.29.Final or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2019-14888 is resolved across your whole dependency graph.
Workarounds
Cap what an attacker can consume: apply request size, rate and timeout limits in front of the affected component, and run it with memory and CPU limits so exhaustion degrades one worker rather than the whole service.

Fixing This On Your OS

If you run this on a Linux distribution, patch through your package manager against the distro's own security advisory below — it tracks the exact backported fix for your release, which can ship on a different timeline (and sometimes a different severity) than the upstream project.

Red HatImportant

Workaround published by Red Hat

Enable HTTP2 (enable-http2="true") in the undertow's HTTPS settings.

Source: Red Hat security advisory for CVE-2019-14888 (CC BY 4.0)

Product	Fixed in	Advisory
EAP-CD 19 Tech Preview	`undertow`	RHSA-2020:2333
Red Hat Data Grid 7.3.5	`undertow`	RHSA-2020:0729
Red Hat Fuse 7.7.0	`undertow`	RHSA-2020:3192
Red Hat JBoss EAP 7.2	`undertow-core`	RHSA-2020:0164
Red Hat JBoss Enterprise Application Platform 7.1 EUS for RHEL 7	`eap7-undertow-0:1.4.18-12.SP12_redhat_00001.1.ep7.el7`	RHSA-2024:5856
Red Hat JBoss Enterprise Application Platform 7.2 for RHEL 6	`eap7-apache-cxf-0:3.2.11-1.redhat_00001.1.el6eap`	RHSA-2020:0159
Red Hat JBoss Enterprise Application Platform 7.2 for RHEL 7	`eap7-apache-cxf-0:3.2.11-1.redhat_00001.1.el7eap`	RHSA-2020:0160
Red Hat JBoss Enterprise Application Platform 7.2 for RHEL 8	`eap7-apache-cxf-0:3.2.11-1.redhat_00001.1.el8eap`	RHSA-2020:0161

Frequently Asked Questions

O3 Security · Impact-Aware SCA

Is CVE-2019-14888 in your dependencies?

Find it across Maven, including transitive dependencies.

Scan my dependencies How O3 SCA works

CVSS Score

7.5/10CVSS v3 base

Vector breakdown

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Raw vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CWE Classification

CWE-400Uncontrolled Resource Consumption

Weaponization

No Nuclei template, Metasploit module or public proof-of-concept found.

Timeline

Disclosed

Jan 23, 2020

Last updated

Oct 24, 2026

Identifiers

CVE-2019-14888

GHSA-vjxc-frw4-jmh5

References

Advisoryaccess.redhat.com · RHSA 2020:0729 Advisorysecurity.netapp.com · ntap 20220211 0001 Advisorynvd.nist.gov · CVE 2019 14888 Reportbugzilla.redhat.com · show bug.cgi Websecurity.netapp.com · ntap 20220211 0001

Related vulnerabilities

This CVE is high severity; 7 of 8 other CVEs affecting undertow-core are rated as high or higher (top: critical).

CVE-2026-28367CVE-2026-28368CVE-2026-28369CVE-2026-3260CVE-2024-4027CVE-2025-12543CVE-2024-3884CVE-2025-9784

Provenance

Sources

OSV.devNVDFIRST.org (EPSS)

Last verifiedOct 24, 2026

CVE-2019-14888 — undertow-core

EPSS Exploitation Probability

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

Description

Affected Packages

Affected Products

Detection & mitigation playbook

Detect

Fix

Workarounds

Fixing This On Your OS

Frequently Asked Questions

Is CVE-2019-14888 in your dependencies?