CVE-2026-49875: CWE-611 Improper Restriction of XML External Entity Reference in Apache Software Foundation Apache CXF
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, which fix this issue.
AI Analysis
Technical Summary
Apache CXF versions prior to 4.2.2 and 4.1.7 improperly configure SAXParserFactory in EndpointReferenceUtils and W3CMultiSchemaFactory classes, lacking necessary JAXP hardening to prevent external entity resolution. This enables out-of-band XML External Entity (XXE) attacks, classified under CWE-611. Users are advised to upgrade to versions 4.2.2 or 4.1.7 where this vulnerability is fixed.
Potential Impact
The vulnerability allows out-of-band external entity resolution due to improper SAXParserFactory configuration, which can be exploited to perform XML External Entity (XXE) attacks. Such attacks may lead to information disclosure or other impacts depending on the environment and usage of the affected components. No known exploits in the wild have been reported.
Mitigation Recommendations
Users should upgrade Apache CXF to version 4.2.2 or 4.1.7, where the issue is fixed by applying the necessary JAXP hardening configurations to prevent external entity resolution. No other mitigation guidance is provided, and patch status is confirmed by the vendor advisory.
CVE-2026-49875: CWE-611 Improper Restriction of XML External Entity Reference in Apache Software Foundation Apache CXF
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, which fix this issue.
Affected software
pkg:maven/Apache Software Foundation/org.apache.cxf:cxf-coreRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
Apache CXF versions prior to 4.2.2 and 4.1.7 improperly configure SAXParserFactory in EndpointReferenceUtils and W3CMultiSchemaFactory classes, lacking necessary JAXP hardening to prevent external entity resolution. This enables out-of-band XML External Entity (XXE) attacks, classified under CWE-611. Users are advised to upgrade to versions 4.2.2 or 4.1.7 where this vulnerability is fixed.
Potential Impact
The vulnerability allows out-of-band external entity resolution due to improper SAXParserFactory configuration, which can be exploited to perform XML External Entity (XXE) attacks. Such attacks may lead to information disclosure or other impacts depending on the environment and usage of the affected components. No known exploits in the wild have been reported.
Mitigation Recommendations
Users should upgrade Apache CXF to version 4.2.2 or 4.1.7, where the issue is fixed by applying the necessary JAXP hardening configurations to prevent external entity resolution. No other mitigation guidance is provided, and patch status is confirmed by the vendor advisory.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- apache
- Date Reserved
- 2026-06-02T08:45:53.536Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a2bd75be617e2d83448bfa6
Added to database: 6/12/2026, 9:54:35 AM
Last enriched: 6/12/2026, 10:10:57 AM
Last updated: 6/12/2026, 11:22:18 AM
Views: 3
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