CVE-2026-57819: CWE-400 Uncontrolled Resource Consumption in Apache Software Foundation Apache CXF
Apache CXF versions prior to 4.2.3, 4.1.8, and 3.6.12 do not set a default limit on the number of form parameters in JAX-RS messages. This lack of a default limit can lead to uncontrolled resource consumption, potentially causing denial of service (DoS) conditions when processing requests with very large numbers of form parameters. The issue is addressed by introducing a default limit of 500 parameters in the fixed versions.
AI Analysis
Technical Summary
Apache CXF allows configuration of a limit on the number of form parameters in JAX-RS messages via the "maxFormParameterCount" option. However, in affected versions, no default limit is set, which may allow an attacker to send requests with an excessive number of form parameters, leading to uncontrolled resource consumption and denial of service. The vulnerability is tracked as CVE-2026-57819 and is classified under CWE-400 (Uncontrolled Resource Consumption). The issue is fixed in Apache CXF versions 4.2.3, 4.1.8, and 3.6.12 by enforcing a default limit of 500 parameters.
Potential Impact
An attacker can exploit this vulnerability by sending requests with a very large number of form parameters, causing the server to consume excessive resources and potentially become unresponsive or crash, resulting in a denial of service. There is no impact on confidentiality or integrity, only availability is affected.
Mitigation Recommendations
Users should upgrade Apache CXF to version 4.2.3, 4.1.8, or 3.6.12 or later, where a default limit of 500 form parameters is enforced. This official fix mitigates the risk of denial of service due to uncontrolled resource consumption. No other mitigation is indicated by the vendor advisory.
CVE-2026-57819: CWE-400 Uncontrolled Resource Consumption in Apache Software Foundation Apache CXF
Description
Apache CXF versions prior to 4.2.3, 4.1.8, and 3.6.12 do not set a default limit on the number of form parameters in JAX-RS messages. This lack of a default limit can lead to uncontrolled resource consumption, potentially causing denial of service (DoS) conditions when processing requests with very large numbers of form parameters. The issue is addressed by introducing a default limit of 500 parameters in the fixed versions.
CVSS v3.1
Score 7.5high
Affected software
Apache Software Foundation
Apache CXF
pkg:maven/Apache Software Foundation/org.apache.cxf:cxf-rt-frontend-jaxrsRun 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 allows configuration of a limit on the number of form parameters in JAX-RS messages via the "maxFormParameterCount" option. However, in affected versions, no default limit is set, which may allow an attacker to send requests with an excessive number of form parameters, leading to uncontrolled resource consumption and denial of service. The vulnerability is tracked as CVE-2026-57819 and is classified under CWE-400 (Uncontrolled Resource Consumption). The issue is fixed in Apache CXF versions 4.2.3, 4.1.8, and 3.6.12 by enforcing a default limit of 500 parameters.
Potential Impact
An attacker can exploit this vulnerability by sending requests with a very large number of form parameters, causing the server to consume excessive resources and potentially become unresponsive or crash, resulting in a denial of service. There is no impact on confidentiality or integrity, only availability is affected.
Mitigation Recommendations
Users should upgrade Apache CXF to version 4.2.3, 4.1.8, or 3.6.12 or later, where a default limit of 500 form parameters is enforced. This official fix mitigates the risk of denial of service due to uncontrolled resource consumption. No other mitigation is indicated by the vendor advisory.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- apache
- Date Reserved
- 2026-06-25T10:54:03.855Z
- State
- PUBLISHED
Threat ID: 6a746c04bf8831d5399ece9e
Added to database: 08/06/2026, 11:12:04 UTC
Last enriched: 08/13/2026, 16:58:01 UTC
Last updated: 09/18/2026, 22:01:36 UTC
Views: 61
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