Executive Summary

CVE-2026-22510 is a PHP Object Injection vulnerability in the AncoraThemes Melody WordPress theme versions up to and including 1.6.3. It allows unauthenticated attackers to inject malicious PHP objects through deserialization of untrusted data.

This vulnerability can be exploited to perform various severe attacks such as remote code execution, SQL injection, path traversal, and denial of service if a suitable Property Oriented Programming (POP) chain is available.

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Impact Analysis

If exploited, this vulnerability can lead to critical security breaches including remote code execution, which allows attackers to run arbitrary code on the affected server.

Other impacts include SQL injection, which can compromise or manipulate the database; path traversal, which can expose sensitive files; and denial of service attacks that can disrupt website availability.

Because the vulnerability can be exploited without authentication, it poses a high risk to any website using the affected Melody theme versions.

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Detection Guidance

There is no specific information provided about detection commands or methods for this vulnerability.

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Mitigation Strategies

Users are strongly advised to apply the mitigation rule issued by Patchstack immediately to block exploitation attempts until an official patch becomes available.

If you are unable to apply the mitigation yourself, seek assistance from your hosting provider or web developer.

Promptly update or mitigate the vulnerability in the Melody WordPress theme to avoid exploitation.

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Compliance Impact

The provided information does not specify how the CVE-2026-22510 vulnerability impacts compliance with common standards and regulations such as GDPR or HIPAA.

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