CVE-2026-27439
Deserialization Vulnerability in ThemeREX Dentario Enables Object Injection
Publication date: 2026-03-05
Last updated on: 2026-03-06
Assigner: Patchstack
Description
Description
CVSS Scores
EPSS Scores
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| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| themerex | dentario | to 1.5 (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 can this vulnerability be detected on my network or system? Can you suggest some commands?
I don't know
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
I don't know
How can this vulnerability impact me? :
This vulnerability can have critical impacts including unauthorized code execution, database compromise through SQL injection, unauthorized file system access via path traversal, and denial of service conditions.
Because it allows unauthenticated attackers to exploit the system, it poses a high risk to the security and availability of affected websites.
The CVSS severity score of 9.8 indicates a critical risk with a high likelihood of exploitation.
Can you explain this vulnerability to me?
CVE-2026-27439 is a high-priority PHP Object Injection vulnerability found in the WordPress Dentario Theme versions up to and including 1.5.
This vulnerability allows unauthenticated attackers to exploit PHP Object Injection, which is classified under OWASP Top 10 A3: Injection.
If a suitable Property Oriented Programming (POP) chain is present, attackers can leverage this flaw to perform code injection, SQL injection, path traversal, denial of service, and other severe impacts.
What immediate steps should I take to mitigate this vulnerability?
[{'type': 'paragraph', 'content': 'CVE-2026-27439 is a critical PHP Object Injection vulnerability affecting the WordPress Dentario Theme up to version 1.5, with no official patch currently available.'}, {'type': 'paragraph', 'content': 'Immediate mitigation involves applying the Patchstack mitigation rule designed to block attacks targeting this vulnerability until an official patch is released.'}, {'type': 'paragraph', 'content': 'Users are strongly advised to implement this mitigation immediately to protect their websites from potential exploitation, which could lead to code injection, SQL injection, path traversal, denial of service, and other severe impacts.'}, {'type': 'paragraph', 'content': "Additionally, using Patchstack's services for automated vulnerability blocking and continuous security intelligence can help safeguard WordPress sites against such threats."}] [1]