Detections
Analytics

Echo: shell-quote: security update to 1.9.0

high Tenable Self-Hosted Container Security Plugin ID 464022

Description

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

 - shell-quote prior to 1.8.5 finalizes parsed tokens in parse() using Array.prototype.concat as a reduce
 accumulator, which reallocates and copies the entire growing array on every iteration. As a result parse()
 runs in O(n^2) time relative to the number of input tokens. An attacker who can supply an attacker-
 controlled string to any code path that calls parse() (no shell metacharacters are required; plain space-
 separated words suffice) can block the single-threaded Node.js event loop for an extended period with a
 small input, resulting in a denial of service. There is no code execution or data disclosure; impact is to
 availability only. Fixed in 1.8.5. (CVE-2026-13311)

Solution

Update the shell-quote library and its related packages to version 1.9.0 or later.

See Also

https://advisory.echohq.com/cve/CVE-2026-13311

Plugin Details

Severity: High

ID: 464022

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: 23.65

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-2026-13311

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

CVSS v4

Risk Factor: High

Base Score: 8.7

Threat Score: 6.6

Threat Vector: CVSS:4.0/E:U

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 9/28/2026

Vulnerability Publication Date: 6/25/2026

Reference Information

CVE: CVE-2026-13311