Optimole Plugin up to 4.2.3 on WordPress get_current_url cross site scripting

Summaryinfo

A vulnerability, which was classified as problematic, was found in Optimole Plugin up to 4.2.3 on WordPress. Affected is the function get_current_url. Such manipulation leads to cross site scripting. This vulnerability is referenced as CVE-2026-5226. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Optimole Plugin up to 4.2.3 on WordPress. Affected by this issue is the function get_current_url. The manipulation with an unknown input leads to a cross site scripting vulnerability. Using CWE to declare the problem leads to CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. Impacted is integrity. CVE summarizes:

The Optimole – Optimize Images in Real Time plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via URL paths in versions up to, and including, 4.2.3 This is due to insufficient output escaping on user-supplied URL paths in the get_current_url() function, which are inserted into JavaScript code via str_replace() without proper JavaScript context escaping in the replace_content() function. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link.

The advisory is shared for download at wordfence.com. This vulnerability is handled as CVE-2026-5226 since 03/31/2026. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1059.007.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-21664). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

• WordPress Plugin

Name

• Optimole Plugin

Version

• 4.2.0
• 4.2.1
• 4.2.2
• 4.2.3

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VulDB is the best source for vulnerability data and more expert information about this specific topic.

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