Detections
Analytics

SCA: security update for markdown2 (GHSA-jr9p-r423-9m2r)

high Tenable Self-Hosted Container Security Plugin ID 416556

Description

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

 - markdown2 >=1.0.1.18, fixed in 2.4.0, is affected by a regular expression denial of service vulnerability.
 If an attacker provides a malicious string, it can make markdown2 processing difficult or delayed for an
 extended period of time. (CVE-2021-26813)

See Also

https://github.com/advisories/GHSA-jr9p-r423-9m2r

Plugin Details

Severity: High

ID: 416556

Version: Revision 1.4

Type: Local

Family: SCA Checks

Published: 1/23/2025

Updated: 8/7/2025

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

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.18

Vendor

Vendor Severity: High

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-2021-26813

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

CVSS v4

Risk Factor: High

Base Score: 8.7

Threat Score: 7.7

Threat Vector: CVSS:4.0/E:P

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 Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 6/2/2021

Vulnerability Publication Date: 3/3/2021

Reference Information

CVE: CVE-2021-26813