CVE-2026-22454
Deserialization Vulnerability in ThemeREX Solaris Enables Object Injection
Publication date: 2026-03-05
Last updated on: 2026-03-10
Assigner: Patchstack
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| themerex | solaris | to 2.5 (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
Can you explain this vulnerability to me?
CVE-2026-22454 is a high-priority PHP Object Injection vulnerability affecting the WordPress Solaris Theme versions up to and including 2.5.
This vulnerability allows unauthenticated attackers to exploit PHP Object Injection, which is classified under OWASP Top 10 A3: Injection.
By exploiting this flaw, attackers can potentially perform remote code execution, SQL injection, path traversal, denial of service, and other severe impacts if a suitable Property Oriented Programming (POP) chain is available.
How can this vulnerability impact me? :
This vulnerability can have critical impacts including remote code execution, which allows attackers to run arbitrary code on the affected system.
It can also lead to SQL injection, enabling attackers to manipulate or access the database unlawfully.
Other possible impacts include path traversal, which can expose sensitive files, and denial of service, which can disrupt the availability of the affected website.
Because the vulnerability is unauthenticated and has a high CVSS score of 9.8, it poses a critical risk with a high likelihood of exploitation.
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?
This vulnerability involves PHP Object Injection in the WordPress Solaris Theme up to version 2.5. Detection typically involves monitoring for suspicious PHP object injection attempts or unusual payloads targeting the theme.
Since no official patch is available, detection can be enhanced by using the mitigation rules provided by Patchstack, which can block attacks targeting this flaw.
Specific commands are not provided in the available resources, but general detection methods include inspecting web server logs for unusual POST requests or payloads containing serialized PHP objects, and using web application firewalls (WAF) with rules targeting PHP Object Injection.
What immediate steps should I take to mitigate this vulnerability?
Immediate mitigation steps include applying the mitigation rule issued by Patchstack, which can block attacks targeting this vulnerability until an official patch is released.
Since no official patch is available as of the publication date, it is recommended to implement automated vulnerability mitigation services provided by Patchstack or similar security solutions.
Additionally, monitoring and restricting access to the affected WordPress Solaris Theme and limiting exposure to unauthenticated users can reduce risk.