Detections
Analytics

SCA: security update for league/commonmark (GHSA-29pj-957v-52mc)

medium Tenable Self-Hosted Container Security Plugin ID 445755

Description

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

 - league/commonmark is a PHP library for parsing and rendering CommonMark Markdown. From 1.5.0 until 2.9.0,
 the AttributesExtension's href and src unsafe-link filter can be bypassed by embedding control bytes, such
 as a tab, carriage return, line feed, or leading C0 control character, in a javascript: URL that browsers
 discard before parsing the scheme, causing the browser to still execute the script even when the unsafe-
 link filter is enabled. This issue is fixed in 2.9.0. (CVE-2026-71478)

Solution

Update the league/commonmark library and its related packages to version 2.9.0 or later.

See Also

https://github.com/advisories/GHSA-29pj-957v-52mc

Plugin Details

Severity: Medium

ID: 445755

Version: Revision 1.1

Type: Local

Family: SCA Checks

Published: 8/7/2026

Updated: 8/7/2026

Risk Information

VPR

Risk Factor: Low

Score: 2.3

Percentile: 9.71

Vendor

Vendor Severity: Medium

CVSS v2

Risk Factor: Medium

Base Score: 6.4

Temporal Score: 4.7

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

CVSS Score Source: CVE-2026-71478

CVSS v3

Risk Factor: Medium

Base Score: 6.1

Temporal Score: 5.3

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

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

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 8/6/2026

Vulnerability Publication Date: 8/6/2026

Reference Information

CVE: CVE-2026-71478