Critical severity · published Jun 12, 2026
CVE-2026-49875
Apache CXF: XML External Entity (XXE) Injection in W3CMultiSchemaFactory and EndpointReferenceUtils
9.8
CVSS
0.5%
EPSS
No
On KEV
Description
Apache CXF's EndpointReferenceUtils and W3CMultiSchemaFactory classes construct a SAXParserFactory without the necessary JAXP hardening configurations, enabling out-of-band (OOB)
external entity resolution. Users are recommended to upgrade to versions 4.2.2 or 4.1.7 or 3.6.12, which fix this issue.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 44% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AC
Apache CXF · Apache Software Foundation
4.2.0 before 4.2.2; 4.0.0 before 4.1.7; before 3.6.12 · source: vendor
CX
Cxf · Apache
before 4.1.7; 4.2.0 before 4.2.2 · source: NVD
RH
Red Hat Fuse 7 · Red Hat
All versions, or not specified · source: CISA
RH
Red Hat JBoss Enterprise Application Platform 7 · Red Hat
All versions, or not specified · source: CISA
RH
Red Hat JBoss Enterprise Application Platform 8 · Red Hat
All versions, or not specified · source: CISA
RH
Red Hat JBoss Web Server 5 · Red Hat
All versions, or not specified · source: CISA
RH
Red Hat Single Sign-On 7 · Red Hat
All versions, or not specified · source: CISA
RH
Red Hat build of Apache Camel 4 for Quarkus 3 · Red Hat
All versions, or not specified · source: CISA
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-49875
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-49875
Vendor Advisory
https://lists.apache.org/thread/3kb9w5bg90xcp06fccoz9k3gpsvyy79o
Mailing List
http://www.openwall.com/lists/oss-security/2026/06/11/2
access.redhat.com
https://access.redhat.com/errata/RHSA-2026:36839
access.redhat.com
https://access.redhat.com/errata/RHSA-2026:37390
access.redhat.com
https://access.redhat.com/security/cve/CVE-2026-49875
bugzilla.redhat.com
https://bugzilla.redhat.com/show_bug.cgi?id=2488309
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