Detections
Analytics

SCA: security update for jsx-slack (GHSA-55xv-f85c-248q)

high Tenable Self-Hosted Container Security Plugin ID 410607

Description

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

 - jsx-slack is a library for building JSON objects for Slack Block Kit surfaces from JSX. In versions prior
 to 4.5.1 users are vulnerable to a regular expression denial-of-service (ReDoS) attack. If attacker can
 put a lot of JSX elements into `<blockquote>` tag, an internal regular expression for escaping characters
 may consume an excessive amount of computing resources. jsx-slack v4.5.1 has patched to a regex for
 escaping blockquote characters. Users are advised to upgrade as soon as possible. (CVE-2021-43838)

See Also

https://github.com/advisories/GHSA-55xv-f85c-248q

Plugin Details

Severity: High

ID: 410607

Version: Revision 1.5

Type: Local

Family: SCA Checks

Published: 1/23/2025

Updated: 7/2/2026

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

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.18

Vendor

Vendor Severity: Low

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.9

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

CVSS Score Source: CVE-2021-43838

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.7

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:P/RL:O/RC:C

Vulnerability Information

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 12/17/2021

Vulnerability Publication Date: 12/17/2021

Reference Information

CVE: CVE-2021-43838