UnratedApache Software Foundation Updated

Unknown [CVE-2026-57819] Apache CXF allows to set a limit on the number of form parameters in a JAX-RS message via the "maxFormParameterCount" configuration option

This security Apache Software Foundation advisory covers CVE-2026-57819 affecting Apache CXF.

CVE-2026-57819 Published Aug 6, 2026Updated by vendor Aug 6, 2026

CVE-2026-57819

Affected products & platforms

Apache Software FoundationUnclassified

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Summary

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.

Affected versions

Apache CXF 4.2.0 before 4.2.3
Apache CXF 4.0.0 before 4.1.8
Apache CXF before 3.6.12

Official advisory · medium-confidence parse· fetched 1 hour ago·verify at source

Fixed versions

4.2.3
4.1.8
3.6.12

Official advisory · medium-confidence parse· fetched 1 hour ago·verify at source

Mitigation checklist

Recommended fix / mitigation

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.

Official advisory · medium-confidence parse· fetched 1 hour ago·verify at source

Sources

Official and corroborating records used to build this advisory.

Official vendor advisoryofficial
Official advisory page fetched and parsed; accepted detail fields are attributed to this page.
Apache Software Foundation
CVE.org CNA recordCVE.org
Independent CNA record used for near-real-time discovery and missed-CVE reconciliation. Discovered from the machine-readable feed https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/delta.json; this link opens the CVE.org record for CVE-2026-57819 instead of the raw feed document.
CVE Program

Cross-references

Validate CVE metadata against the authoritative registries.

CVE-2026-57819NVD CVE.org MITRE

Official resources

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