undertow-io/undertow · Security
Undertow: Denial of Service via Multipart/Form-Data Parsing on HTTP GET Requests
- GHSA ID
- GHSA-3x3v-w654-m28m
- CVE ID
- CVE-2026-3260
- Severity
- medium
- Published
- Updated
- CVSS
- 5.9 · CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
- CVSS v3
- 5.9 · CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Description
A flaw was found in Undertow. A remote attacker could exploit this vulnerability by sending an HTTP GET request containing multipart/form-data content. If the underlying application processes parameters using methods like getParameterMap(), the server prematurely parses and stores this content to disk. This could lead to resource exhaustion, potentially resulting in a Denial of Service (DoS).
CWEs
- CWE-770 · Allocation of Resources Without Limits or Throttling