CVE-2026-87908
Description
A flaw was found in multiparty, a Node.js library for parsing multipart/form-data request bodies. The parser does not properly limit the memory used when accumulating headers of a single multipart part. An unauthenticated attacker can exploit this by sending a request with a large volume of header bytes, causing the parser to exhaust process memory and crash the server. This leads to a Denial of Service (DoS) with no impact on confidentiality or integrity.
Statement
This is an Important denial of service vulnerability affecting Red Hat JBoss Fuse, which incorporates the multiparty Node.js library. An unauthenticated remote attacker can exploit this flaw by sending a specially crafted request with an excessive volume of multipart part headers. This leads to unbounded memory consumption and a server crash, but does not impact confidentiality or integrity.
Mitigation
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.
Common Vulnerability Scoring System (CVSS) Score Details
Info alert:Important note
CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).
The following CVSS metrics and score provided are preliminary and subject to review.
CVSS v3 Score Breakdown
| Red Hat | NVD | cve.org | |
|---|---|---|---|
| Base Score | 7.5 | N/A | 7.5 |
| Attack Vector | Network | N/A | Network |
| Attack Complexity | Low | N/A | Low |
| Privileges Required | None | N/A | None |
| User Interaction | None | N/A | None |
| Scope | Unchanged | N/A | Unchanged |
| Confidentiality | None | N/A | None |
| Integrity Impact | None | N/A | None |
| Availability Impact | High | N/A | High |
Vector
Red Hat: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
cve.org: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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