BMI Adult & Kid Calculator <= 1.2.3 - Authenticated (Administrator+) Stored Cross-Site Scripting
Strategic Overview
- Status
- Patched in 1.2.4
- Affected Plugin
- BMI Adult & Kid Calculator
- Affected Version
<= 1.2.3- CVSS
- 4.4Medium
- Weakness type
- CWE-79 · Improper Neutralization of Input During Web Page Generation
- CVE
CVE-2025-53469
At a glance
CVE-2025-53469 is a medium-severity Improper Neutralization of Input During Web Page Generation vulnerability in the BMI Adult & Kid Calculator WordPress plugin, affecting versions <= 1.2.3. It carries a CVSS score of 4.4 (reachable over the network). Exploitation requires an authenticated account at Administrator level or above. The issue is fixed in version 1.2.4; sites on affected versions should update now. Disclosed September 2025, reported by Nabil Irawan.
Vulnerability Overview
The BMI Adult & Kid Calculator plugin for WordPress is vulnerable to Stored Cross-Site Scripting in versions up to, and including, 1.2.3 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.
Technical Analysis
The vector marks this flaw as remotely reachable over the network, and no interaction from a victim user.
CWE-79: Improper Neutralization of Input During Web Page Generation
Reaching this weakness in BMI Adult & Kid Calculator <= 1.2.3 takes an account at Administrator level or above. Cross-site scripting happens when input from a request is written into a page without being escaped for the context it lands in, so the browser parses attacker-supplied text as markup or script.
Injected script runs with the privileges of whoever views the affected page, which is how these flaws turn into administrator session theft, silent account creation or persistent backdoors in page content. For BMI Adult & Kid Calculator the fix is 1.2.4: builds <= 1.2.3 are affected, anything from 1.2.4 onward is not.
Remediation
Update to version 1.2.4, or a newer patched version
How does WordSec protect against this?
An attacker needs Administrator access first, so the firewall sees the attempt as traffic from a logged-in account: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: BMI Adult & Kid Calculator 1.2.4 closes this, and updating the plugin is the step that ends it.
- Firewall
- Alerts
External References
Related records
Same weakness class
Other vulnerabilities in BMI Adult & Kid Calculator
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