Findings

CVE-2024-3884

A flaw was found in Undertow that can cause remote denial of service attacks.

Published Dec 3, 2025 · updated Oct 14, 2026

A flaw was found in Undertow that can cause remote denial of service attacks. When the server uses the FormEncodedDataDefinition.doParse(StreamSourceChannel) method to parse large form data encoding with application/x-www-form-urlencoded, the method will cause an OutOfMemory issue. This flaw allows unauthorized users to cause a remote denial of service (DoS) attack.

Timeline

Detection, updates, and resolution for this record.

  1. Dec 3, 2025 · NIST NVD

    Detected

    A flaw was found in Undertow that can cause remote denial of service attacks. When the server uses the FormEncodedDataDefinition.doParse(StreamSourceChannel) method to parse large form data encoding with application/x-www-form-urlencoded, the method will cause an OutOfMemory issue. This flaw allows unauthorized users to cause a remote denial of service (DoS) attack.

  2. Oct 14, 2026 · NIST NVD

    Updated

    A flaw was found in Undertow that can cause remote denial of service attacks. When the server uses the FormEncodedDataDefinition.doParse(StreamSourceChannel) method to parse large form data encoding with application/x-www-form-urlencoded, the method will cause an OutOfMemory issue. This flaw allows unauthorized users to cause a remote denial of service (DoS) attack.

Sources

  • CVE.orgCVE-2024-3884

    Official CVE identifier

    cve.org
  • NIST NVDCVE-2024-3884

    A flaw was found in Undertow that can cause remote denial of service attacks. When the server uses the FormEncodedDataDefinition.doParse(StreamSourceChannel) method to parse large form data encoding with application/x-www-form-urlencoded, the method will cause an OutOfMemory issu

    nvd.nist.gov

References

CVE-2024-3884 · ZeroDay Findings