PT-2026-43571 · WordPress · Github Shortcode

Zakaria · CVE-2026-8042 · Published 2026-05-27 · Updated 2026-05-27

Positive Technologies (AI Summary)

CVSS v3.1

6.4

Medium

Base vector

AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

Name of the Vulnerable Software and Affected Versions Github Shortcode versions prior to 0.2

Description The Github Shortcode plugin for WordPress contains a Stored Cross-Site Scripting issue. This occurs because of insufficient input sanitization and output escaping within the repo attribute of the 'github' shortcode. Authenticated attackers with Contributor-level access or higher can inject arbitrary web scripts into pages, which then execute when a user visits the affected page.

Recommendations Update the plugin to a version later than 0.1. As a temporary workaround, restrict the ability of users with Contributor-level access to use the repo attribute in the 'github' shortcode.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2026-8042

Affected Products

Github Shortcode

References · 5

• https://nvd.nist.gov/vuln/detail/CVE-2026-8042 · Security Note
• https://plugins.trac.wordpress.org/browser/github-shortcode/trunk/githubshortcode.php#L25 · Note
• https://wordfence.com/threat-intel/vulnerabilities/id/c6848b7a-d869-41e7-9f33-01a35b6d4822?source=cve · Note
• https://plugins.trac.wordpress.org/browser/github-shortcode/tags/0.1/githubshortcode.php#L25 · Note
• https://t.me/CVEtracker/55084 · Telegram Post