CVE-2026-27986
Local File Inclusion in ThemeREX OsTende
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 | ostende | to 1.4.3 (inc) |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-98 | The PHP application receives input from an upstream component, but it does not restrict or incorrectly restricts the input before its usage in "require," "include," or similar functions. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
CVE-2026-27986 is a Local File Inclusion (LFI) vulnerability in the WordPress OsTende Theme versions up to and including 1.4.3.
This vulnerability allows an unauthenticated attacker to include and display local files from the target website by exploiting improper control of filename for include/require statements in PHP.
As a result, sensitive information such as database credentials can be exposed.
How can this vulnerability impact me? :
[{'type': 'paragraph', 'content': 'Exploitation of this vulnerability could lead to exposure of sensitive information including database credentials.'}, {'type': 'paragraph', 'content': "Depending on the website's configuration, it could result in a complete database takeover."}, {'type': 'paragraph', 'content': 'The vulnerability is considered highly dangerous with a CVSS severity score of 8.1 and a strong likelihood of exploitation.'}, {'type': 'paragraph', 'content': 'No official patch is currently available, and deactivating the theme does not eliminate the risk unless a mitigation rule is applied.'}, {'type': 'paragraph', 'content': 'Users are advised to apply the mitigation rule issued by Patchstack or remove and replace the vulnerable theme to secure their websites.'}] [1]
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?
I don't know
What immediate steps should I take to mitigate this vulnerability?
To mitigate the CVE-2026-27986 vulnerability in the OsTende WordPress theme, users should apply the mitigation rule issued by Patchstack that blocks attacks exploiting this Local File Inclusion vulnerability.
If applying the mitigation rule is not feasible, users are advised to remove and replace the vulnerable OsTende theme entirely, as deactivating the theme alone does not eliminate the security risk.
Currently, no official patch is available for this vulnerability, and the theme has not been updated for over a year, indicating it may no longer receive security updates.