CVE-2023-54413

MEDIUM 6.1

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

CVSS Score

6.1

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-79
Vendor	onthegosystems
Product	wpml multilingual cms
Published	Oct 22, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Affected Versions

OnTheGoSystems / WPML Multilingual CMS

0 < 4.6.1

References

NVD ↗ CVE.org ↗ EPSS Data ↗

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

Credits

Deepak kumar 0xcharan 🔍 The Shadowserver Foundation