Deserialization of Untrusted Data in Veto Theme

Executive Summary

CVE-2026-93927 is a Deserialization of Untrusted Data vulnerability in the Axiomthemes Veto theme. It allows Object Injection, meaning attackers can inject malicious objects during deserialization. This affects Veto versions from n/a through 1.6.0.

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Detection Guidance

Detecting this vulnerability requires checking if the Veto theme version 1.6.0 or earlier is installed on your WordPress site. Inspect the theme files for suspicious activity or unauthorized changes. Use commands like 'grep -r "unserialize" /path/to/theme/' to search for deserialization functions. Monitor server logs for unusual requests or errors.

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Impact Analysis

This vulnerability has a high CVSS score of 9.8, indicating severe risk. Attackers can exploit it to execute harmful actions on the server without authentication. It may lead to full site compromise, data theft, or malware distribution. Mass campaigns targeting thousands of websites are likely.

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Compliance Impact

This vulnerability could lead to unauthorized data access or manipulation, which may violate GDPR's data integrity and confidentiality requirements or HIPAA's safeguards for protected health information. Unpatched systems risk non-compliance due to potential breaches of sensitive data.

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Mitigation Strategies

Immediately apply Patchstack's mitigation rule to block attacks. Disable the Veto theme if not essential. Update the theme if an official patch becomes available. Contact your hosting provider or developer for assistance. Consider using automated mitigation solutions from Patchstack to protect your site.

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