The vulnerability CVE-2026-27998 affects ThemeREX Vixus versions up to 1.0.16 and is caused by improper validation or control of filenames used in PHP include or require statements. This weakness enables an attacker to perform PHP Local File Inclusion, potentially allowing execution of arbitrary code or disclosure of sensitive files. The CVSS 3.1 base score is 8.1, reflecting network attack vector with high impact on confidentiality, integrity, and availability, though requiring high attack complexity and no privileges or user interaction.

Successful exploitation of this vulnerability can lead to full compromise of the affected system, including unauthorized disclosure of sensitive information, modification of data, and disruption of service. The high CVSS score reflects the critical impact on confidentiality, integrity, and availability. However, no known exploits in the wild have been reported to date.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no patch or official fix information is provided, users of ThemeREX Vixus should monitor for vendor updates and advisories. Until a fix is available, consider restricting access to vulnerable components and applying any recommended temporary mitigations from the vendor if published.