CVE-2026-97246
Deferred Deferred - Pending Action

Subscriber PHP Object Injection in ShortPixel Image Optimizer

Publication date: 2026-09-30

Last updated on: 2026-10-20

Assigner: Patchstack

Description
Deserialization of Untrusted Data vulnerability in ShortPixel ShortPixel Image Optimizer shortpixel-image-optimiser allows Object Injection.This issue affects ShortPixel Image Optimizer: from n/a through 6.5.5.

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Meta Information

Published
2026-09-30
Last Modified
2026-10-20
Generated
2026-11-08
AI Q&A
2026-09-30
EPSS Evaluated
2026-11-07
NVD
CVE-2026-97246
EUVD
EUVD-2026-89910

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
shortpixel image_optimizer to 6.5.5 (inc)
shortpixel shortpixel_image_optimizer to 6.5.5 (inc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-502 The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.

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Executive Summary

This vulnerability is a PHP Object Injection flaw in the ShortPixel Image Optimizer WordPress plugin versions 6.5.5 and earlier. It allows attackers to manipulate data processing on the site to execute harmful actions on the server.

Detection Guidance

Detecting this vulnerability requires checking if the ShortPixel Image Optimizer plugin version 6.5.5 or earlier is installed on your WordPress site. You can verify the installed version by inspecting the plugin files or using WordPress admin panel under Plugins. No specific network commands are provided in the context, but monitoring for unusual server behavior or unauthorized data processing may indicate exploitation.

Impact Analysis

Attackers could exploit this to perform unauthorized actions on your server, potentially leading to data breaches, site defacement, or further compromise of your WordPress environment.

Compliance Impact

This vulnerability could lead to unauthorized access or data exposure, which may violate GDPR or HIPAA requirements for data protection and security. Non-compliance risks fines and legal consequences.

Mitigation Strategies
  • Update the ShortPixel Image Optimizer plugin to version 6.5.6 or later to patch the vulnerability.
  • Apply the mitigation rule provided by Patchstack to block attacks until the update is completed.
  • Review and monitor your site for any suspicious activity or unauthorized changes.

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