What’s Vulnerable › Vulnerabilities

CVE-2023-54413: WPML Multilingual CMS WordPress Plugin < 4.6.1 Reflected XSS via wp-login.php wp_lang

• Severity: medium (CVSS 6.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-22 · updated 2026-10-22
• Weakness: CWE-79

Description

WPML Multilingual CMS plugin for WordPress before 4.6.1 contains a reflected cross-site scripting vulnerability that allows unauthenticated attackers to inject script by supplying crafted input in the wp_lang parameter. Attackers can lure users to /wp-login.php with a wp_lang value injecting an image input with an obfuscated onfocus handler to execute JavaScript in the victim's browser. Exploitation evidence was first observed by the Shadowserver Foundation on 2025-11-12.

Affected products

• OnTheGoSystems WPML Multilingual CMS: before 4.6.1 — fixed in 4.6.1

How to fix

Upgrade to a fixed version: OnTheGoSystems WPML Multilingual CMS 4.6.1. Check the vendor advisory for mitigations.

References

• https://github.com/projectdiscovery/nuclei-templates/blob/main/http/vulnerabilities/wordpress/wpml-multilingual-cms-xss.yaml
• https://wpml.org/changelog/2023/03/wpml-4-6-1-important-security-update/
• https://wpscan.com/vulnerability/b9cc519c-7ec2-42c3-9f42-01e928e12139/
• https://www.vulncheck.com/advisories/wpml-multilingual-cms-wordpress-plugin-4.6.1-reflected-xss-via-wp-login-php-wp-lang

Get alerted when CVE-2023-54413 or the next vulnerability affects your stack