Executive Summary

CVE-2026-32511 is a PHP Object Injection vulnerability found in the Mikado-Themes Stål WordPress theme versions prior to 1.7. It allows unauthenticated attackers to inject arbitrary objects during deserialization of untrusted data, which can lead to various attacks.

• The vulnerability enables potential code injection.
• It can lead to SQL injection.
• It may allow path traversal attacks.
• It can cause denial of service conditions.

This vulnerability is classified under the OWASP Top 10 category A3: Injection and does not require any privileges to exploit, making it particularly dangerous.

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Impact Analysis

If your website uses the Stål WordPress theme version below 1.7, this vulnerability can be exploited by unauthenticated attackers to perform malicious actions such as executing arbitrary code, injecting SQL commands, traversing file paths, or causing denial of service.

Such attacks can compromise the security and availability of your website, potentially leading to data breaches, website defacement, or downtime.

Because no privileges are required to exploit this vulnerability, any unprotected site running the affected theme is at risk.

To mitigate the risk, it is strongly advised to update the Stål theme to version 1.7 or later or apply available mitigation rules.

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Mitigation Strategies

To mitigate the vulnerability in the Stål Theme versions prior to 1.7, users are strongly advised to update the theme to version 1.7 or newer.

If immediate updating is not possible, users should seek assistance from their hosting provider or web developer.

Patchstack provides automated mitigation solutions and a mitigation rule to block attacks until the update is applied.

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Compliance Impact

The vulnerability allows unauthenticated attackers to potentially execute code injection, SQL injection, path traversal, denial of service, and other attacks. Such security weaknesses can lead to unauthorized access or manipulation of sensitive data.

Because of these risks, affected systems may face challenges in maintaining compliance with common standards and regulations like GDPR and HIPAA, which require protection of personal and sensitive data against unauthorized access and breaches.

Mitigating this vulnerability by updating to the patched version or applying mitigation rules is critical to reduce the risk of data breaches and maintain compliance.

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Detection Guidance

There is no specific detection method or commands provided in the available information to identify this vulnerability on your network or system.

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