CVE-2026-27986
Received Received - Intake
Local File Inclusion in ThemeREX OsTende

Publication date: 2026-03-05

Last updated on: 2026-03-06

Assigner: Patchstack

Description
Improper Control of Filename for Include/Require Statement in PHP Program ('PHP Remote File Inclusion') vulnerability in ThemeREX OsTende ostende allows PHP Local File Inclusion.This issue affects OsTende: from n/a through <= 1.4.3.
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Meta Information
Published
2026-03-05
Last Modified
2026-03-06
Generated
2026-06-16
AI Q&A
2026-03-05
EPSS Evaluated
2026-06-15
NVD
CVE-2026-27986
EUVD
EUVD-2026-9656
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
themerex ostende to 1.4.3 (inc)
Helpful Resources
Exploitability
CWE
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KEV
KEV Icon
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.
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Executive Summary

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.

Impact Analysis

[{'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]

Compliance Impact

I don't know

Detection Guidance

I don't know

Mitigation Strategies

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.

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