niklaslindemann Lpagery Plugin up to 2.5.7 on WordPress lpagery_add_filter_text_template_post lpagery_template cross site scripting

Summaryinfo

A vulnerability categorized as problematic has been discovered in niklaslindemann Lpagery Plugin up to 2.5.7. Affected is the function lpagery_add_filter_text_template_post. Such manipulation of the argument lpagery_template leads to cross site scripting. This vulnerability is uniquely identified as CVE-2026-15404. The attack can be launched remotely. No exploit exists.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in niklaslindemann Lpagery Plugin up to 2.5.7. Affected by this issue is the function lpagery_add_filter_text_template_post. The manipulation of the argument lpagery_template 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 Lpagery plugin for WordPress is vulnerable to Stored Cross-Site Scripting via post titles in versions up to, and including, 2.5.7. This is due to insufficient input sanitization and output escaping in the lpagery_add_filter_text_template_post() function, which is hooked to admin_footer and echoes the raw post_title of the post referenced by the ?lpagery_template query parameter directly inside a JavaScript single-quoted string literal, without esc_js(), esc_html(), or any other encoding. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a higher-privileged user (such as an administrator) accesses an admin page with the ?lpagery_template=<post_id> parameter pointing at the attacker's post.

The advisory is available at wordfence.com. This vulnerability is handled as CVE-2026-15404 since 07/10/2026. The exploitation is known to be easy. The attack may be launched remotely. Successful exploitation requires user interaction by the victim. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1059.007 by the MITRE ATT&CK project.

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

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Productinfo

Type

• WordPress Plugin

Vendor

• niklaslindemann

Name

• Lpagery Plugin

Version

• 2.5.0
• 2.5.1
• 2.5.2
• 2.5.3
• 2.5.4
• 2.5.5
• 2.5.6
• 2.5.7

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

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