Cyber Resilience

CVE-2026-27383

High

Published: 05 March 2026

Published
05 March 2026
Modified
22 April 2026
KEV Added
—
Patch
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CVSS Score v3.1 8.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.0051 39.6th percentile
Risk Priority 55 floored blend · peak EPSS

Summary

CVE-2026-27383 is a high-severity PHP Remote File Inclusion (CWE-98) vulnerability. Its CVSS base score is 8.1 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 39.6th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

The strongest mitigations our analysis identified are NIST 800-53 SI-10 (Information Input Validation) and SI-2 (Flaw Remediation).

Deeper analysis

CVE-2026-27383 is an Improper Control of Filename for Include/Require Statement in PHP Program vulnerability, referred to as PHP Remote File Inclusion, present in the RadiusTheme Metro WordPress theme. This flaw enables PHP Local File Inclusion and affects the Metro theme from unspecified initial versions through version 2.13 inclusive.

The vulnerability carries a CVSS 3.1 base score of 8.1 (AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H), indicating it can be exploited over the network by unauthenticated attackers requiring high attack complexity and no user interaction. Successful exploitation allows attackers to achieve high impacts on confidentiality, integrity, and availability.

Mitigation details are available in the Patchstack advisory at https://patchstack.com/database/Wordpress/Theme/metro/vulnerability/wordpress-metro-theme-2-13-local-file-inclusion-vulnerability?_s_id=cve.

OWASP Top 10 for Web (2025)

A05:2025 Injection

EU & UK References

Vulnerability details

Improper Control of Filename for Include/Require Statement in PHP Program ('PHP Remote File Inclusion') vulnerability in RadiusTheme Metro metro allows PHP Local File Inclusion.This issue affects Metro: from n/a through <= 2.13.

CWE(s)
CWE-98

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
attack.mitre.org →
T1505.003 Web Shell Persistence
Adversaries may backdoor web servers with web shells to establish persistent access to systems.
attack.mitre.org →
Why these techniques?

Remote file inclusion (LFI/RFI) flaw in public-facing WordPress theme directly enables unauthenticated network exploitation (T1190); commonly results in arbitrary PHP code execution via web shell inclusion (T1505.003).

Confidence: HIGH · MITRE ATT&CK Enterprise v19.0

CVEs Like This One

CVE-2024-51319Shared CWE-98
CVE-2025-32304Shared CWE-98
CVE-2026-7522Shared CWE-98
CVE-2025-6746Shared CWE-98
CVE-2025-58206Shared CWE-98
CVE-2026-27894Shared CWE-98
CVE-2025-48160Shared CWE-98
CVE-2025-67936Shared CWE-98
CVE-2025-49436Shared CWE-98
CVE-2025-5804Shared CWE-98

Affected Assets

Mitigating Controls

Mitigating Controls (NIST 800-53 r5) AI

SI-10 Information Input Validation good match
prevent

Directly addresses improper control of filenames in PHP include/require statements by enforcing input validation to prevent local file inclusion.

SI-2 Flaw Remediation good match
prevent

Requires timely identification, reporting, and correction of the specific PHP Local File Inclusion flaw in the Metro WordPress theme versions through 2.13.

SC-7 Boundary Protection partial match
preventdetect

Boundary protection via web application firewalls detects and blocks network-based exploitation attempts targeting the file inclusion vulnerability.

References