CVE-2026-57819

Apache CXF: No default restriction on the amount of form parameters per message

State: Published
Severity: 7.5 High
Published: Aug 6, 2026
Updated: Aug 7, 2026
Reserved: Jun 25, 2026

Description

Apache CXF allows to set a limit on the number of form parameters in a JAX-RS message via the "maxFormParameterCount" configuration option. However, no default limit is set which may lead to denial of service attacks when processing requests with very large numbers of form parameters. Users are recommended to upgrade to versions 4.2.3 or 4.1.8 or 3.6.12, which fix this issue by using a default limit of 500 parameters.

Scores

CVSS	Score	Vector	Source
3.1	7.5 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	CISA-ADP

Weaknesses

CWE-400 Uncontrolled Resource Consumption

Affected Products

Product	Versions
Apache CXFApache Software Foundation	4.2.0 to before 4.2.3Affected 4.0.0 to before 4.1.8Affected before 3.6.12Affected

References

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