Is CVE-2023-54413 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2023-54413 being exploited in the wild.

How severe is CVE-2023-54413?

Medium severity, with a CVSS score of 6.1, published 22 October 2026.

Which products and versions are affected?

WPML Multilingual CMS before 4.6.1.

Is there a fix for CVE-2023-54413?

Yes: fixed in WPML Multilingual CMS 4.6.1. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2023-54413 attacked?

It is attacked over the network.

Am I affected by CVE-2023-54413?

Check whether you run WPML Multilingual CMS at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2023-54413: WPML Multilingual CMS reflected cross-site scripting

CVE-2023-54413 · Severity: medium · CVSS 6.1 · Published 2026-10-22

WPML Multilingual CMS is a WordPress plugin that enables websites to be translated into multiple languages. Versions before 4.6.1 contain a reflected cross-site scripting (XSS) vulnerability in the wp_lang parameter on the login page. An attacker can craft a malicious link that, when clicked by a user, executes arbitrary JavaScript in their browser, potentially stealing credentials or session cookies.

Vendors: WPML.

Quick answers

Is CVE-2023-54413 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2023-54413 being exploited in the wild.
How severe is CVE-2023-54413?: Medium severity, with a CVSS score of 6.1, published 22 October 2026.
Which products and versions are affected?: WPML Multilingual CMS before 4.6.1.
Is there a fix for CVE-2023-54413?: Yes: fixed in WPML Multilingual CMS 4.6.1. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2023-54413 attacked?: It is attacked over the network.
Am I affected by CVE-2023-54413?: Check whether you run WPML Multilingual CMS at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

Fixed in: WPML Multilingual CMS 4.6.1

Technical details

The plugin fails to properly escape the wp_lang URL parameter before outputting it to the login page, allowing reflected XSS injection. Attackers can inject malicious JavaScript via crafted wp_lang values (e.g., obfuscated onfocus handlers in image tags) sent to /wp-login.php. No authentication is required; the attack requires user interaction (clicking a malicious link). A fix exists in version 4.6.1 and later.

Affected products

WPML Multilingual CMS before 4.6.1

Timeline

2023-03-16: disclosed: Security update released by WPML
2025-11-12: other: Exploitation evidence first observed by Shadowserver Foundation
2026-10-22: advisory

References

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