Detections
Analytics

Echo: multer: security update to 2.3.0

high Tenable Self-Hosted Container Security Plugin ID 462904

Description

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

 - multer is a middleware for handling multipart/form-data in Node.js. A small multipart request with two
 specially crafted text field names can make multer's field parser synchronously iterate a maximum-length
 sparse array, blocking the event loop so the process cannot handle other requests. A large numeric array
 index in the first field allocates a maximum-length sparse array, and a second field with a non-numeric
 key then triggers a full-length iteration inside the append-field dependency. All versions before 2.3.0
 are affected, and this is a remotely triggerable denial of service. multer 2.3.0 adds an opt-in
 fieldArrayIndexLimit option that rejects oversized array indexes. Upgrade to multer 2.3.0 and set
 limits.fieldArrayIndexLimit to the largest array index your application needs to remediate.
 (CVE-2026-82333)

Solution

Update the multer library and its related packages to version 2.3.0 or later.

See Also

https://advisory.echohq.com/cve/CVE-2026-82333

Plugin Details

Severity: High

ID: 462904

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/3/2026

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

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.64

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

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

CVSS Score Source: CVE-2026-82333

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

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

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

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 9/28/2026

Vulnerability Publication Date: 8/28/2026

Reference Information

CVE: CVE-2026-82333