CVE-2026-25449
Deserialization Object Injection in Shinetheme Traveler
Publication date: 2026-03-18
Last updated on: 2026-04-23
Assigner: Patchstack
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| shinetheme | traveler | From 3.2.8.1 (inc) to 3.2.8.1 (exc) |
| shinetheme | traveler | to 3.2.8.1 (exc) |
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)?:
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How can this vulnerability be detected on my network or system? Can you suggest some commands?
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Can you explain this vulnerability to me?
CVE-2026-25449 is a high-severity PHP Object Injection vulnerability found in the WordPress Traveler Theme versions prior to 3.2.8.1.
This vulnerability allows unauthenticated attackers to inject malicious objects into the application, potentially leading to arbitrary code execution, SQL injection, path traversal, denial of service, and other attacks if a suitable PHP Object Injection Property Oriented Programming (POP) chain is present.
It is classified under the OWASP Top 10 category A3: Injection and has a critical CVSS score of 9.8.
How can this vulnerability impact me? :
This vulnerability can have severe impacts including allowing attackers to execute arbitrary code on your system, perform SQL injection attacks, traverse paths to access unauthorized files, and cause denial of service conditions.
Because the vulnerability can be exploited without authentication, it poses a significant risk to any website using the affected Traveler Theme versions.
Exploitation could lead to complete compromise of the affected website, data breaches, service outages, and other security incidents.
What immediate steps should I take to mitigate this vulnerability?
The immediate mitigation step is to update the WordPress Traveler Theme to version 3.2.8.1 or later, which contains the patch for this vulnerability.
If you are unable to update immediately, Patchstack provides an automatic mitigation rule to block attacks targeting this vulnerability until the update can be applied.
Users who cannot update right away are advised to seek assistance from their hosting provider or web developer to apply temporary protections.