CVE-2026-17506
Received Received - Intake

Stored XSS in Independent Analytics WordPress Plugin

Publication date: 2026-08-05

Last updated on: 2026-08-05

Assigner: Wordfence

Description
The Independent Analytics plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 404 not_found_url tracking parameter in versions up to, and including, 2.15.0. This is due to the get_cell_content() function applying urldecode() after esc_url() when rendering the URL column for 404 entries — a sequence that allows percent-encoded HTML to pass URL validation and then be reconstructed as raw markup, which wp_kses_post() does not strip because it retains img elements and data-* attributes, and because the public REST endpoint /iawp/search accepts unauthenticated requests as long as they carry a signature that is itself embedded in public page HTML. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

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Meta Information

Published
2026-08-05
Last Modified
2026-08-05
Generated
2026-08-05
AI Q&A
2026-08-05
EPSS Evaluated
N/A
NVD
CVE-2026-17506
EUVD
EUVD-2026-53339

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
independent_analytics plugin to 2.15.0 (inc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
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.

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Executive Summary

The Independent Analytics WordPress plugin up to version 2.15.0 has a stored XSS flaw in the 404 not_found_url tracking parameter. The plugin decodes URLs after validating them, allowing percent-encoded HTML to bypass security checks and render as raw markup. Attackers can inject scripts via unauthenticated REST API requests signed in public page HTML.

Detection Guidance

Check WordPress sites using the Independent Analytics plugin version 2.15.0 or lower. Inspect server logs for requests to /iawp/search with unusual parameters. Look for stored XSS payloads in 404 tracking entries via database queries.

Impact Analysis

Unauthenticated attackers could inject malicious scripts into pages you visit. These scripts may steal cookies, session tokens, or sensitive data, redirect you to phishing sites, or perform actions on your behalf without your knowledge.

Compliance Impact

This vulnerability could lead to unauthorized data access or modification, violating GDPR's data protection principles and HIPAA's security requirements for safeguarding protected health information. Organizations may face fines or penalties for non-compliance.

Mitigation Strategies

Update the Independent Analytics plugin to the latest version. Remove or sanitize any suspicious 404 tracking entries in the database. Implement input validation for the 404 not_found_url parameter. Restrict unauthenticated access to /iawp/search endpoints.

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