CVE-2026-27438
Deserialization Object Injection in ThemeREX Kingler
Publication date: 2026-03-05
Last updated on: 2026-03-09
Assigner: Patchstack
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| themerex | kingler | to 1.7 (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
Can you explain this vulnerability to me?
CVE-2026-27438 is a high-priority PHP Object Injection vulnerability in the WordPress Kingler Theme versions up to and including 1.7.
This vulnerability allows unauthenticated attackers to perform PHP Object Injection, which can lead to code injection, SQL injection, path traversal, denial of service, and other attacks if a suitable Property Oriented Programming (POP) chain is available.
It is classified under OWASP Top 10 A3: Injection and has a CVSS severity score of 9.8, indicating it is highly dangerous and likely to be exploited.
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 denial of service attacks.
Since the vulnerability requires no privileges to exploit, attackers can easily compromise affected websites running the vulnerable Kingler theme.
Without an official patch, the risk remains high, but mitigation rules are available to block attacks targeting this vulnerability temporarily.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
I don't know
How can this vulnerability be detected on my network or system? Can you suggest some commands?
There is no specific detection command or method provided for this vulnerability in the available resources.
What immediate steps should I take to mitigate this vulnerability?
Since no official patch is currently available for CVE-2026-27438, immediate mitigation involves applying the Patchstack mitigation rule designed to block attacks targeting this vulnerability.
Users are advised to implement this mitigation as soon as possible to protect their websites from potential exploitation.