CVE-2026-39551
Deserialization of Untrusted Data in Töbel
Publication date: 2026-06-02
Last updated on: 2026-06-02
Assigner: Patchstack
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| elated_themes | tobel | to 1.8.1 (inc) |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-502 | The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid. |
Attack-Flow Graph
AI Powered Q&A
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
The vulnerability in the Töbel WordPress theme allows unauthenticated attackers to perform PHP Object Injection, potentially leading to code execution, SQL injection, path traversal, and denial of service. Such impacts can compromise the confidentiality, integrity, and availability of data.
Because of these risks, organizations using the vulnerable theme may face challenges in maintaining compliance with data protection standards and regulations such as GDPR and HIPAA, which require safeguarding personal and sensitive data against unauthorized access and breaches.
Failure to address this vulnerability could lead to data breaches or service disruptions, which are reportable incidents under these regulations and could result in legal and financial penalties.
Can you explain this vulnerability to me?
CVE-2026-39551 is a high-priority PHP Object Injection vulnerability found in the WordPress Töbel Theme versions 1.8.1 and below. It arises from deserialization of untrusted data, allowing attackers to inject malicious objects into the application.
This vulnerability can be exploited without authentication, meaning attackers do not need prior access to the system. If a suitable POP (Property Oriented Programming) chain exists, attackers can leverage this flaw to execute code injection, SQL injection, path traversal, denial of service, and other malicious activities.
How can this vulnerability impact me? :
This vulnerability can have severe impacts including unauthorized code execution, data breaches through SQL injection, unauthorized file access via path traversal, and service disruption through denial of service attacks.
Because the vulnerability is unauthenticated and highly dangerous, it is expected to be targeted in mass-exploit campaigns affecting thousands of websites regardless of their size or popularity.
Immediate mitigation is necessary to prevent exploitation, either by updating the Töbel theme to version 1.9 or later or by applying a mitigation rule provided by Patchstack.
What immediate steps should I take to mitigate this vulnerability?
Immediate action is required to mitigate the risk of the PHP Object Injection vulnerability in the Töbel WordPress theme.
- Update the Töbel theme to version 1.9 or later.
- Apply the mitigation rule provided by Patchstack to block attacks until the theme is updated.