CVE-2026-57819
High
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.
SeverityHigh
CVSS7.5
Exploit probability—
Product
Apache Cxf
PublishedAug 6, 2026
First seenAug 6, 2026
Weakness typeCWE-400Uncontrolled resource consumption
How to fix
Update
- apache cxf3.6.12, 4.1.8, 4.2.3 or later
Vendor advisories
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| apache cxf | v < 3.6.12, 4.0.0 ≤ v < 4.1.8, 4.2.0 ≤ v < 4.2.3 | 3.6.12, 4.1.8, 4.2.3 |
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