Detections
Analytics

SCA: security update for http-proxy-middleware (GHSA-gcq2-9pq2-cxqm)

high Tenable Self-Hosted Container Security Plugin ID 443872

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - http-proxy-middleware is node.js http-proxy middleware. From 3.0.4 until 3.0.7 and 4.1.1, fixRequestBody()
 is the library's documented helper for re-emitting a request body that was already consumed by a body
 parser. When the outgoing Content-Type is multipart/form-data, it rebuilds the body with
 handlerFormDataBodyData(), which interpolates each req.body key and value directly into the multipart wire
 format without neutralizing CR/LF. A \r\n inside a value (or key) lets an attacker close the current part
 and inject an entirely new form part. Because the proxy's own body parser saw a single opaque value, any
 gateway-side policy or validation performed on req.body is evaluated against a different set of fields
 than the upstream backend ultimately parses a request/parameter desynchronization across the trust
 boundary. This vulnerability is fixed in 3.0.7 and 4.1.1. (CVE-2026-55603)

Solution

Update the http-proxy-middleware library and its related packages to version 3.0.7 or later.

See Also

https://github.com/advisories/GHSA-gcq2-9pq2-cxqm

Plugin Details

Severity: High

ID: 443872

Version: Revision 1.3

Type: Local

Family: SCA Checks

Published: 6/24/2026

Updated: 7/6/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Low

Score: 3.9

Percentile: 52.75

Vendor

Vendor Severity: High

CVSS v2

Risk Factor: Medium

Base Score: 6.1

Temporal Score: 4.8

Vector: CVSS2#AV:N/AC:H/Au:N/C:P/I:C/A:N

CVSS Score Source: CVE-2026-55603

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.7

Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:H/A:N

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 6/18/2026

Vulnerability Publication Date: 6/18/2026

Reference Information

CVE: CVE-2026-55603

cwe: CWE-93