CVSS base score
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
What the vulnerability does
The GitHub Gist Shortcode Plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'id' parameter of the 'gist' shortcode in all versions up to, and including, 0.2 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Explanation of Vulnerability in Simple Terms
The GitHub Gist Shortcode Plugin for WordPress versions 0.2 and earlier contains a cross-site scripting (XSS) vulnerability. An attacker with low-level site access can inject malicious scripts that execute in other users' browsers, potentially stealing session tokens or modifying page content. The vulnerability affects the plugin's shortcode processing and has scope impact, meaning the attack can extend beyond the vulnerable component.
What an attacker can do
Inject malicious JavaScript that runs in other users' browsers when they view affected pages.
Potential impact on your site
Visitors and administrators may have their sessions hijacked or see malicious content injected into pages.
Conditions required to exploit
Attacker needs a low-privilege WordPress account (subscriber or contributor level) and network access to the site.
Key dates
External resources
