SEPTEMBER 14, 2026
Live Feed
Back to database
Case File

CVE-2026-87908

HIGH · CVSS 7.5 EPSS 0.30% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-09-11 · Last synced 2026-09-14

CyberRota Analysis

AI-Generated

The multiparty Node.js library, used for parsing multipart/form-data request bodies, is vulnerable in versions 2.1.0 to 4.3.0 due to an unbounded memory allocation for headers, allowing unauthenticated attackers to exploit this by sending requests with excessively large headers. This can lead to a denial of service by exhausting server memory and crashing the application. Organizations utilizing this library should prioritize upgrading to version 4.3.1 or later to mitigate this risk.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

GitHub PoC Links

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-87908
Severity
HIGH
CVSS
7.5
EPSS
0.30%

Original NVD Description

multiparty is a Node.js library for parsing multipart/form-data request bodies. In versions from 2.1.0 up to but not including 4.3.1, the parser does not bound the amount of memory used while accumulating the headers of a single multipart part. An unauthenticated attacker can send a single request whose part carries a very large volume of header bytes, forcing the parser to buffer all of them and exhausting the process memory, which crashes the server. This is a denial of service with no confidentiality or integrity impact. The issue is fixed in multiparty 4.3.1, which caps the size of the accumulated part headers. Users should upgrade to multiparty 4.3.1 or later.