---
id: "CVE-2023-54413"
kind: "vulnerability"
aliases: ["CVE-2023-54413"]
title: "WPML Multilingual CMS: reflected XSS via wp_lang on login page"
severity: "medium"
cvss: 6.1
epss: 0.00211
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["package", "self-hosted", "wordpress", "wpml"]
not_affected_if: ["wpml-not-installed"]
published_at: "2026-10-22T11:17:05+00:00"
first_seen_at: "2026-10-23T21:57:30+00:00"
updated_at: "2026-10-25T04:02:11+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-54413", "first_seen_at": "2026-10-23T21:57:30+00:00"}, {"source": "epss", "url": "https://api.first.org/data/v1/epss?cve=CVE-2023-54413", "first_seen_at": "2026-10-24T07:15:51+00:00"}]
---

# WPML Multilingual CMS: reflected XSS via wp_lang on login page

WPML Multilingual CMS for WordPress before 4.6.1 reflects the wp_lang parameter into the login page without escaping. An unauthenticated attacker who lures a user to a crafted /wp-login.php link can run JavaScript in that user's browser.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Check the installed WPML version in the WordPress admin plugin list or in `wp-content/plugins/sitepress-multilingual-cms/sitepress.php`
- Confirm whether the plugin is active on the site

## Fix

- Update WPML Multilingual CMS to `4.6.1` or later

## Timeline

- 2026-10-23T21:57:30+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2023-54413
- 2026-10-24T07:15:51+00:00 epss https://api.first.org/data/v1/epss?cve=CVE-2023-54413

## From the sources

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.

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