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Vulnerability details: VCID-c3c2-b2bc-6bdh
Vulnerability ID VCID-c3c2-b2bc-6bdh
Aliases CVE-2020-14338
GHSA-w4jq-qh47-hvjq
Summary Improper Input Validation 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.
Status Published
Exploitability 0.5
Weighted Severity 6.2
Risk 3.1
Affected and Fixed Packages Package Details
Weaknesses (3)
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
CWE-20 Improper Input Validation
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
System Score Found at
cvssv3 5.3 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-14338.json
epss 0.00388 https://api.first.org/data/v1/epss?cve=CVE-2020-14338
epss 0.00388 https://api.first.org/data/v1/epss?cve=CVE-2020-14338
epss 0.00388 https://api.first.org/data/v1/epss?cve=CVE-2020-14338
epss 0.00388 https://api.first.org/data/v1/epss?cve=CVE-2020-14338
epss 0.00388 https://api.first.org/data/v1/epss?cve=CVE-2020-14338
epss 0.00388 https://api.first.org/data/v1/epss?cve=CVE-2020-14338
epss 0.00388 https://api.first.org/data/v1/epss?cve=CVE-2020-14338
epss 0.00388 https://api.first.org/data/v1/epss?cve=CVE-2020-14338
epss 0.00388 https://api.first.org/data/v1/epss?cve=CVE-2020-14338
epss 0.00388 https://api.first.org/data/v1/epss?cve=CVE-2020-14338
epss 0.00388 https://api.first.org/data/v1/epss?cve=CVE-2020-14338
epss 0.00388 https://api.first.org/data/v1/epss?cve=CVE-2020-14338
epss 0.00388 https://api.first.org/data/v1/epss?cve=CVE-2020-14338
epss 0.00388 https://api.first.org/data/v1/epss?cve=CVE-2020-14338
epss 0.00388 https://api.first.org/data/v1/epss?cve=CVE-2020-14338
cvssv3.1 5.3 https://bugzilla.redhat.com/show_bug.cgi?id=1860054
generic_textual MODERATE https://bugzilla.redhat.com/show_bug.cgi?id=1860054
cvssv3.1_qr MODERATE https://github.com/advisories/GHSA-w4jq-qh47-hvjq
cvssv3.1 5.3 https://lists.apache.org/thread.html/rf96c5afb26b596b4b97883aa90b6c0b0fc4c26aaeea7123c21912103@%3Cj-users.xerces.apache.org%3E
generic_textual MODERATE https://lists.apache.org/thread.html/rf96c5afb26b596b4b97883aa90b6c0b0fc4c26aaeea7123c21912103@%3Cj-users.xerces.apache.org%3E
cvssv3.1 5.3 https://nvd.nist.gov/vuln/detail/CVE-2020-14338
generic_textual MODERATE https://nvd.nist.gov/vuln/detail/CVE-2020-14338
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-14338.json
https://api.first.org/data/v1/epss?cve=CVE-2020-14338
https://bugzilla.redhat.com/show_bug.cgi?id=1860054
https://lists.apache.org/thread.html/rf96c5afb26b596b4b97883aa90b6c0b0fc4c26aaeea7123c21912103@%3Cj-users.xerces.apache.org%3E
CVE-2020-14338 https://nvd.nist.gov/vuln/detail/CVE-2020-14338
GHSA-w4jq-qh47-hvjq https://github.com/advisories/GHSA-w4jq-qh47-hvjq
RHSA-2020:4244 https://access.redhat.com/errata/RHSA-2020:4244
RHSA-2020:4245 https://access.redhat.com/errata/RHSA-2020:4245
RHSA-2020:4246 https://access.redhat.com/errata/RHSA-2020:4246
RHSA-2020:4247 https://access.redhat.com/errata/RHSA-2020:4247
RHSA-2020:4931 https://access.redhat.com/errata/RHSA-2020:4931
RHSA-2020:5361 https://access.redhat.com/errata/RHSA-2020:5361
RHSA-2021:0600 https://access.redhat.com/errata/RHSA-2021:0600
RHSA-2021:0603 https://access.redhat.com/errata/RHSA-2021:0603
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-14338.json
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N Found at https://bugzilla.redhat.com/show_bug.cgi?id=1860054
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N Found at https://lists.apache.org/thread.html/rf96c5afb26b596b4b97883aa90b6c0b0fc4c26aaeea7123c21912103@%3Cj-users.xerces.apache.org%3E
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2020-14338
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.5977
EPSS Score 0.00388
Published At April 1, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-04-01T12:49:34.314861+00:00 GitLab Importer Import https://gitlab.com/gitlab-org/advisories-community/-/blob/main/maven/xerces/xercesImpl/CVE-2020-14338.yml 38.0.0