XSS in Onthegosystems Wpml Multilingual Cms
CVE-2023-54413
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.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- wpml.org/changelog/2023/03/wpml-4-6-1-important-security-update/ (vendor-advisory)
- wpscan.com/vulnerability/b9cc519c-7ec2-42c3-9f42-01e928e12139/ (third-party-advisory)
- github.com/projectdiscovery/nuclei-templates/blob/main/http/vulnerabilities/wor… (technical-description)
- www.vulncheck.com/advisories/wpml-multilingual-cms-wordpress-plugin-4.6.1-refle… (third-party-advisory)
Frequently asked questions
- What is CVE-2023-54413?
- CVE-2023-54413 is a medium-severity vulnerability in Onthegosystems Wpml Multilingual Cms, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-10-22.
- How severe is CVE-2023-54413?
- Medium severity. CVSS v3 base score is 6.1 out of 10.