Resource exhaustion in Undertow - CVE-2024-3884
Published: December 8, 2025
Vulnerability identifier: #VU119260
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2024-3884
CWE-ID: CWE-400
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Red Hat Inc.
Affected software:
Undertow
Undertow
Detailed vulnerability description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to application does not properly control consumption of internal resources within the FormEncodedDataDefinition.doParse(StreamSourceChannel) method. A remote attacker can send a large form data encoding with application/x-www-form-urlencoded to trigger resource exhaustion and perform a denial of service (DoS) attack.
How to mitigate CVE-2024-3884
Install updates from vendor's website.