CVE-2026-8883
MediumCVSS 6.4Exploitation Probability (EPSS)
Low risk10th percentile - higher than 10% of all known CVEs
Summary
The Global Body Mass Index Calculator plugin for WordPress is vulnerable to Stored Cross-Site Scripting (XSS) via the 'gbmicalc' shortcode in versions up to and including 1.2. This is due to insufficient input sanitization and output escaping on user-supplied shortcode attributes.
Risk Assessment
Authenticated attackers with contributor-level access and above can inject arbitrary web scripts that will execute whenever a user accesses an injected page. This poses a serious threat to user data security and site integrity.
Recommendation
It is recommended to update the plugin to the latest version to mitigate this vulnerability. Additionally, conducting a security audit to identify and remove potential malicious scripts is advisable.
Original NVD description (English source)
The Global Body Mass Index Calculator plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'gbmicalc' shortcode in versions up to, and including, 1.2. This is due to insufficient input sanitization and output escaping on user-supplied shortcode attributes in the GBMI_Calc_Widget::widget() function. Shortcode attributes are extracted directly into local variables via @extract($args) and then echoed unescaped into an HTML style attribute (height/width) and HTML body context (title), allowing attribute-breakout payloads. 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.