CVE-2026-57743
HighCVSS 8.1Exploitation Probability (EPSS)
Low risk43th percentile - higher than 43% of all known CVEs
Summary
The RT-Theme 18 | Extensions (rt18-extensions) plugin version 2.5 and earlier contains a PHP Local File Inclusion (LFI) vulnerability due to improper control of filename in include/require statement. This allows an attacker to include arbitrary files from the server.
Risk Assessment
The risk involves reading sensitive configuration files, source code, or executing malicious code, potentially leading to full server compromise.
Recommendation
Immediately update the RT-Theme 18 | Extensions plugin to a version higher than 2.5 if available, or apply temporary mitigations such as file path validation.
Other vulnerabilities in RT-Theme 18 | Extensions
See all- CVE-2026-57744Critical
The RT-Theme 18 | Extensions (rt18-extensions) plugin up to version 2.5 contains a deserialization of untrusted data vulnerability allowing object injection. An attacker can remotely exploit this flaw to execute arbitrary code or manipulate data.
- CVE-2026-57745High
The RT-Theme 18 | Extensions (rt18-extensions) plugin up to version 2.5 contains a reflected Cross-site Scripting (XSS) vulnerability due to improper input neutralization during web page generation. An attacker can inject malicious JavaScript code into an HTTP request, which will be executed in the victim's browser.
- CVE-2026-39711Medium
The RT-Theme 18 | Extensions plugin for WordPress up to version 2.5 inserts sensitive data into sent information. Attackers can retrieve embedded sensitive data.
- CVE-2026-39710Medium
CSRF vulnerability in RT-Theme 18 | Extensions (rt18-extensions) up to version 2.5 inclusive. Allows Cross-Site Request Forgery.
Original NVD description (English source)
Improper Control of Filename for Include/Require Statement in PHP Program ('PHP Remote File Inclusion') vulnerability in stmcan RT-Theme 18 | Extensions rt18-extensions allows PHP Local File Inclusion.This issue affects RT-Theme 18 | Extensions: from n/a through <= 2.5.