CVE-2026-89193
Deferred Deferred - Pending Action

Cross-Site Scripting in Robin Image Optimizer WordPress Plugin

Publication date: 2026-09-30

Last updated on: 2026-09-30

Assigner: WPScan

Description
The Robin Image Optimizer WordPress plugin before 2.0.8 does not escape values that its bundled HTML parser re-emits into element attributes when a non-default image delivery mode is enabled, allowing unauthenticated users to submit content that is stored and later executed as Cross-Site Scripting in the browser of any user viewing an affected page, including administrators.

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Meta Information

Published
2026-09-30
Last Modified
2026-09-30
Generated
2026-10-19
AI Q&A
2026-09-30
EPSS Evaluated
2026-10-18
NVD
CVE-2026-89193
EUVD
EUVD-2026-89616

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
wpmedia robin_image_optimizer to 2.0.8 (exc)
wpmedia robin_image_optimizer to 2.0.7 (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.

Attack-Flow Graph

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Executive Summary

This is a stored Cross-Site Scripting (XSS) vulnerability in the Robin Image Optimizer WordPress plugin versions 2.0.0 to 2.0.7. It occurs when a non-default image delivery mode is enabled. The plugin's HTML parser does not properly escape values, allowing unauthenticated users to inject malicious scripts. These scripts are stored on the server and executed in the browsers of anyone viewing an affected page, including administrators.

Detection Guidance

Check the installed version of the Robin Image Optimizer plugin. If it is between 2.0.0 and 2.0.7, the system is vulnerable. Use WordPress admin panel or run a command like 'wp plugin list' in the WordPress directory to verify the version.

Impact Analysis

An attacker could exploit this to steal sensitive user data like cookies or session tokens, deface websites, or redirect users to malicious sites. Since it affects administrators, it could lead to full site compromise. The stored nature means the attack persists even after the attacker leaves the site.

Compliance Impact

This vulnerability could lead to unauthorized access to personal data, violating GDPR and HIPAA requirements for data protection. Organizations using the vulnerable plugin may face compliance breaches, legal penalties, and reputational damage due to potential data exposure.

Mitigation Strategies

Update the Robin Image Optimizer plugin to version 2.0.8 or later immediately. Disable the plugin temporarily if an update is not immediately available. Review and remove any suspicious scripts or content from the website.

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