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CVE-2023-54413

MEDIUM 5.1 CVSS 4.0
Published
October 22, 2026
Last modified
November 3, 2026
NVD status
Deferred
Reported by
disclosure@vulncheck.com
Weakness
CWE-79
CVSS vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

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 WordPress components

A confirmed match is backed by the plugin or theme slug. A possible match is based on the product name only and should be verified.

Affected products and versions

  • OnTheGoSystems WPML Multilingual CMS — Before 4.6.1

References

  • github.com https://github.com/projectdiscovery/nuclei-templates/blob/main/http/vulnerabilities/wordpress/wpml-multilingual-cms-xss.yaml
  • 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/
  • www.vulncheck.com https://www.vulncheck.com/advisories/wpml-multilingual-cms-wordpress-plugin-4.6.1-reflected-xss-via-wp-login-php-wp-lang
  • nvd.nist.gov Official NVD record