CVE-2026-50645: CWE-400 Uncontrolled Resource Consumption in Apache Software Foundation Apache CXF
There is no restriction on the amount of attachment headers that a message can contain when being deserialized by Apache CXF, which can lead to uncontrolled resource consumption or a denial of service attack. Users are recommended to upgrade to versions 4.2.2 or 4.1.7, which fix this issue by imposing a maximum default of 500 attachments per message.
AI Analysis
Technical Summary
CVE-2026-50645 is a vulnerability in Apache CXF where there is no limit on the number of attachment headers in a message during deserialization. This can result in uncontrolled resource consumption or denial of service attacks. The Apache Software Foundation fixed this by introducing a default maximum of 500 attachments per message in Apache CXF versions 4.1.7 and 4.2.2.
Potential Impact
Unrestricted attachment headers can cause excessive resource consumption on systems processing messages with many attachments, potentially leading to denial of service. No known exploits are reported in the wild at this time.
Mitigation Recommendations
Users should upgrade to Apache CXF version 4.1.7 or 4.2.2 or later, where the issue is fixed by imposing a maximum default of 500 attachments per message. Patch status is not explicitly stated as 'official-fix' but the vendor recommends these versions as remediation.
CVE-2026-50645: CWE-400 Uncontrolled Resource Consumption in Apache Software Foundation Apache CXF
Description
There is no restriction on the amount of attachment headers that a message can contain when being deserialized by Apache CXF, which can lead to uncontrolled resource consumption or a denial of service attack. Users are recommended to upgrade to versions 4.2.2 or 4.1.7, which fix this issue by imposing a maximum default of 500 attachments per message.
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
CVE-2026-50645 is a vulnerability in Apache CXF where there is no limit on the number of attachment headers in a message during deserialization. This can result in uncontrolled resource consumption or denial of service attacks. The Apache Software Foundation fixed this by introducing a default maximum of 500 attachments per message in Apache CXF versions 4.1.7 and 4.2.2.
Potential Impact
Unrestricted attachment headers can cause excessive resource consumption on systems processing messages with many attachments, potentially leading to denial of service. No known exploits are reported in the wild at this time.
Mitigation Recommendations
Users should upgrade to Apache CXF version 4.1.7 or 4.2.2 or later, where the issue is fixed by imposing a maximum default of 500 attachments per message. Patch status is not explicitly stated as 'official-fix' but the vendor recommends these versions as remediation.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- apache
- Date Reserved
- 2026-06-05T14:05:01.499Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a2bd75fe617e2d83448c009
Added to database: 6/12/2026, 9:54:39 AM
Last enriched: 6/12/2026, 10:09:36 AM
Last updated: 6/12/2026, 12:20:20 PM
Views: 5
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