Denial of Service Vulnerability in Apache CXF
CVE-2026-57819

7.5HIGH

Key Information:

Vendor

Apache
Status
Apache Cxf
Vendor
CVE Published:
6 August 2026

What is CVE-2026-57819?

The Apache CXF framework allows setting a limit on the number of form parameters processed in a JAX-RS message through the 'maxFormParameterCount' configuration. However, a lack of a default limit can leave systems vulnerable to denial of service attacks, especially when handling requests with a significantly high number of form parameters. To mitigate this risk, users should upgrade to the recommended versions: 4.2.3, 4.1.8, or 3.6.12, which implement a default limitation of 500 parameters.

Affected Version(s)

Apache CXF 4.2.0 < 4.2.3

Apache CXF 4.0.0 < 4.1.8

Apache CXF 0 < 3.6.12

References

https://lists.apache.org/thread/2n14mk01bjc3lrsyhzrkwy8h8...
vendor-advisory

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.