CVE-2026-49875

Apache CXF: XML External Entity (XXE) Injection in W3CMultiSchemaFactory and EndpointReferenceUtils

Published: Jun 12, 2026Updated: Aug 7, 2026 Sources: CVE List NVDCWE-611

9.8CRITICAL

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.

No summary for this CVE yet.

CVSS Vector Breakdown

Exploitability

AV:NAttack Vector

Network

AC:LAttack Complexity

Low

PR:NPrivileges Required

None

UI:NUser Interaction

None

Scope

S:UScope

Unchanged

Impact

C:HConfidentiality

High

I:HIntegrity

High

A:HAvailability

High

Open in CVSS calculator →

Weaknesses

CWE-611

Affected Products

Apache Software Foundation

oss-project·USaka apache foundation

Apache CXFLibrary

OSS Libraries / generic-library

apache

oss-project·USaka apache http server, apache httpd

cxfLibraryLibrary

OSS Libraries / generic-library

Exploitability

Official Patch Available

Is your org exposed to CVE-2026-49875?Request an assessment to establish which checks are appropriate for your systems. Check my exposure

Attack Graph

Products CVE Techniques Tactics

Click technique nodes for MITRE ATT&CK details · drag to pan · Ctrl/⌘ + scroll to zoom, or go fullscreen.

MITRE ATT&CK

2 techniques

Collection

Initial Access

View detailed technique mapping

References

https://lists.apache.org/thread/3kb9w5bg90xcp06fccoz9k3gpsvyy79o

lists.apache.org

http://www.openwall.com/lists/oss-security/2026/06/11/2

openwall.com

https://access.redhat.com/errata/RHSA-2026:36839

access.redhat.com

and 4 more references View all →

News mentions

Important Apache CXF Vulnerabilities Demand Immediate Action
en-us·Daily CyberSecurity (securityonline.info)·Jun 13, 2026 Patch Apache CXF web-app

Unlock Complete Vulnerability Intelligence

Get the full picture for CVE-2026-49875 and every CVE in our database. Create a free account — no credit card required.

Create Free Account

Plain-language analysis

Impact assessment and exploitation scenario in plain English

Attack graph visualization

Interactive attack path and kill chain mapping

Exploit details & PoC links

ExploitDB, Metasploit, GitHub PoCs with direct links

Nuclei scanner templates

Ready-to-use vulnerability scanner templates

Full remediation guide

Patch instructions, workarounds, and compliance impact

Interactive AI chat

Ask questions about this vulnerability in natural language

Related vulnerabilities

Semantically similar CVEs and attack patterns

REST API & MCP access

Integrate vulnerability data into your workflows