CVE-2020-14338

Name: CVE-2020-14338
Creator: NVD / NIST
Published: 2020-09-17T15:15:13.143+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.3/10EPSS 1.29%

Last modified Jun 17, 2026

CVE-2020-14338 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. A flaw was found in Wildfly's implementation of Xerces, specifically in the way the XMLSchemaValidator class in the JAXP component of Wildfly enforced the "use-grammar-pool-only" feature. This flaw allows a specially-crafted XML file to manipulate the validation process in certain cases. EPSS estimates a 1.29% chance of exploitation in the next 30 days.

Description

A flaw was found in Wildfly's implementation of Xerces, specifically in the way the XMLSchemaValidator class in the JAXP component of Wildfly enforced the "use-grammar-pool-only" feature. This flaw allows a specially-crafted XML file to manipulate the validation process in certain cases. This issue is the same flaw as CVE-2020-14621, which affected OpenJDK, and uses a similar code. This flaw affects all Xerces JBoss versions before 2.12.0.SP3.

Metrics

CVSS 3.1

5.3/10

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

EPSS Probability

1.29%

66.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions	Update
Redhat	Xerces	< 2.12.0	—
Redhat	Xerces	2.12.0	Sp1

References

https://bugzilla.redhat.com/show_bug.cgi?id=1860054Issue Tracking, Vendor Advisory
https://lists.apache.org/thread.html/rf96c5afb26b596b4b97883aa90b6c0b0fc4c26aaeea7123c21912103%40%3Cj-users.xerces.apache.org%3E
https://bugzilla.redhat.com/show_bug.cgi?id=1860054Issue Tracking, Vendor Advisory
https://lists.apache.org/thread.html/rf96c5afb26b596b4b97883aa90b6c0b0fc4c26aaeea7123c21912103%40%3Cj-users.xerces.apache.org%3E

Timeline

Published: Sep 17, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-14338?

How severe is CVE-2020-14338?

CVE-2020-14338 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 1.29% probability of exploitation in the next 30 days.

How do I fix CVE-2020-14338?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-14338?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST