Stored XSS in UiCore Elements ≤ 1.3.14 Allows Persistent Script Injection

Compliance Impact

The provided information does not specify how the CVE-2026-39708 vulnerability affects compliance with common standards and regulations such as GDPR or HIPAA.

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Executive Summary

CVE-2026-39708 is a Cross Site Scripting (XSS) vulnerability in the WordPress UiCore Elements Plugin versions up to and including 1.3.14.

This vulnerability allows attackers to inject malicious scripts, such as redirects, advertisements, or other HTML payloads, into affected websites. These scripts execute when visitors access the site.

Exploitation requires a user with at least Contributor or Developer privileges to perform an action like clicking a malicious link, visiting a crafted page, or submitting a form, meaning user interaction is necessary.

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Impact Analysis

The vulnerability can lead to attackers injecting malicious scripts into your website, which can execute when visitors access the site.

• These scripts could redirect users to malicious sites.
• They could display unwanted advertisements.
• They could execute other harmful HTML payloads.

Exploitation requires user interaction from someone with Contributor or Developer privileges, which limits the attack vector but still poses a moderate risk.

Currently, no official patch is available, so mitigation involves updating the plugin once a patch is released or seeking help from hosting providers or web developers.

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Detection Guidance

This vulnerability is a Stored Cross Site Scripting (XSS) issue in the UiCore Elements WordPress plugin up to version 1.3.14. Detection typically involves checking for the presence of the vulnerable plugin version and monitoring for suspicious script injections in web pages generated by the plugin.

Since the vulnerability requires user interaction and involves injection of malicious scripts, detection can include scanning web content for unexpected or suspicious HTML or JavaScript payloads.

No specific commands are provided in the available resources, but general detection steps could include:

• Checking the installed version of the UiCore Elements plugin to see if it is version 1.3.14 or earlier.
• Using web vulnerability scanners that detect XSS vulnerabilities on your website.
• Manually inspecting web pages generated by the plugin for injected scripts or unusual HTML content.

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Mitigation Strategies

Immediate mitigation steps include:

• Monitor and restrict user roles to limit who can contribute or develop content, as exploitation requires at least Contributor or Developer privileges.
• Seek assistance from hosting providers or web developers to implement temporary protective measures.
• Update the UiCore Elements plugin to a patched version once it becomes available.

Currently, no official patch is available, so limiting user privileges and monitoring for suspicious activity are key interim steps.

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