CVE-2026-64958: CWE-400 Uncontrolled Resource Consumption in Apache Software Foundation Apache CXF
CVE-2026-64958 is a denial of service vulnerability in Apache CXF caused by an incomplete fix for a previous issue (CVE-2026-50645). The flaw allows attackers to exhaust resources by sending messages with many attachment headers. The issue is resolved in Apache CXF versions 4.2.3, 4.1.8, and 3.6.12.
AI Analysis
Technical Summary
An incomplete fix for CVE-2026-50645 in Apache CXF allows an attacker to perform a denial of service (DoS) attack by sending a message containing many attachment headers, leading to uncontrolled resource consumption (CWE-400). This vulnerability affects multiple versions of Apache CXF prior to 4.2.3, 4.1.8, and 3.6.12. The CVSS 3.1 base score is 7.5, indicating a high severity with network attack vector, low attack complexity, no privileges required, no user interaction, and impact limited to availability.
Potential Impact
Successful exploitation results in denial of service by exhausting system resources, causing service unavailability. There is no impact on confidentiality or integrity according to the CVSS vector.
Mitigation Recommendations
Users should upgrade Apache CXF to versions 4.2.3, 4.1.8, or 3.6.12 where this vulnerability is fixed. No other mitigation or temporary workaround is indicated in the available data.
CVE-2026-64958: CWE-400 Uncontrolled Resource Consumption in Apache Software Foundation Apache CXF
Description
CVE-2026-64958 is a denial of service vulnerability in Apache CXF caused by an incomplete fix for a previous issue (CVE-2026-50645). The flaw allows attackers to exhaust resources by sending messages with many attachment headers. The issue is resolved in Apache CXF versions 4.2.3, 4.1.8, and 3.6.12.
CVSS v3.1
Score 7.5high
Affected software
Apache Software Foundation
Apache CXF
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
An incomplete fix for CVE-2026-50645 in Apache CXF allows an attacker to perform a denial of service (DoS) attack by sending a message containing many attachment headers, leading to uncontrolled resource consumption (CWE-400). This vulnerability affects multiple versions of Apache CXF prior to 4.2.3, 4.1.8, and 3.6.12. The CVSS 3.1 base score is 7.5, indicating a high severity with network attack vector, low attack complexity, no privileges required, no user interaction, and impact limited to availability.
Potential Impact
Successful exploitation results in denial of service by exhausting system resources, causing service unavailability. There is no impact on confidentiality or integrity according to the CVSS vector.
Mitigation Recommendations
Users should upgrade Apache CXF to versions 4.2.3, 4.1.8, or 3.6.12 where this vulnerability is fixed. No other mitigation or temporary workaround is indicated in the available data.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- apache
- Date Reserved
- 2026-07-21T08:59:30.596Z
- State
- PUBLISHED
Threat ID: 6a746c04bf8831d5399ecea1
Added to database: 08/06/2026, 11:12:04 UTC
Last enriched: 08/13/2026, 17:22:08 UTC
Last updated: 09/17/2026, 22:01:37 UTC
Views: 59
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