Vulnerabilities / BMI Adult & Kid Calculator / WPSEC-2026-1421
BMI Adult & Kid Calculator <= 1.2.3 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'id_calc' Shortcode Attribute
Medium 6.4
CWE-79Fixed in 1.2.4
- ID
- WPSEC-2026-1421
- Plugin
- BMI Adult & Kid Calculator (bmi-adultkid-calculator)
- Affected
- all versions before 1.2.4
- Remediation
- Update to 1.2.4 or later.
- CVSS 3.1
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
- Weakness
- CWE-79
- Usage
- Plugin Low · Affected versions Low among sites WPSec scans, 2026-10-22
- Attack surface
- BMI Adult & Kid Calculator on WPSec AttackSurface
- Fix released
- Published
Description
The BMI Adult & Kid Calculator plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'id_calc' attribute of the BMIAKC_kid_calc shortcode in all versions up to, and including, 1.2.3. This is due to insufficient input sanitization, as the attribute is output unquoted into inline JavaScript variable and function names with only esc_attr(), which does not prevent JavaScript injection. 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.
References
- https://wpsec.com/vuln/WPSEC-2026-1421/
- https://plugins.svn.wordpress.org/bmi-adultkid-calculator/tags/1.2.4/
- https://wordpress.org/plugins/bmi-adultkid-calculator/
Published by WPSec. Provided as is, without warranty. Corrections: contact us.
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