ZDF
Sign inSign up

Vulnerabilities

Security incident · CVE-2023-54413

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Published Oct 22, 2026 · catalog updated Oct 22, 2026 · OnTheGoSystems WPML Multilingual CMS

Patch now

CVE-2023-54413 is in the CISA known-exploited catalog. Confirm OnTheGoSystems WPML Multilingual CMS against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Gaps on this record

  • No version range is stored. A customer cannot check an installed version against this record.
Severity
Medium5.1
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
0.21%
Remediation
Remediation guidance
Affected products
vendor OnTheGoSystems WPML Multilingual CMS

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor OnTheGoSystems WPML Multilingual CMSversion unspecified

How to fix CVE-2023-54413

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2023-54413 is in the CISA known-exploited catalog. Confirm OnTheGoSystems WPML Multilingual CMS against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Which versions are affected?

Affected version ranges are not on this record. Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

What should an analyst verify?

CWE-79: Cross-site Scripting (XSS). EPSS 0.21%. The CISA KEV listing is the exploitation evidence. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

WordPress security

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Oct 22, 2026 · CISA KEV

    Known exploited

    Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

  2. Oct 22, 2026 · NIST NVD

    Detected

    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. Exploitati

Sources

  • CVE.orgVulnerability recordCVE-2023-54413

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2023-54413

    30-day exploitation probability 0.21%

    first.org
  • NIST NVDVulnerability recordCVE-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 val

    nvd.nist.gov
  • VulnCheck KEVConfirmed exploitationCVE-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 val

    vulncheck.com

References

Freshness

Last verified in this catalog Oct 23, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.