Cyber Resilience

CVE-2026-28097

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 0.0040 32.0th percentile
Risk Priority 55 floored blend · peak EPSS

Summary

CVE-2026-28097 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 32.0th 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-2026-28097 is an Improper Control of Filename for Include/Require Statement in PHP Program vulnerability, classified as PHP Remote File Inclusion but enabling PHP Local File Inclusion, in the ThemeREX Artrium WordPress theme. This issue affects Artrium versions from n/a through 1.0.14. Published on 2026-03-05T06:16:43.970, it carries a CVSS v3.1 base score of 8.1 (AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H) and maps to CWE-98.

The vulnerability can be exploited by unauthenticated attackers over the network (AV:N), requiring high attack complexity (AC:H) but no privileges (PR:N) or user interaction (UI:N). Successful exploitation results in high impacts to confidentiality, integrity, and availability (C:H/I:H/A:H) within the unchanged security scope (S:U), potentially allowing local file access and related PHP code execution depending on server configuration.

Mitigation guidance is available in the Patchstack advisory at https://patchstack.com/database/Wordpress/Theme/artrium/vulnerability/wordpress-artrium-theme-1-0-14-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 ThemeREX Artrium artrium allows PHP Local File Inclusion.This issue affects Artrium: from n/a through <= 1.0.14.

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 →
T1005 Data from Local System Collection
Adversaries may search local system sources, such as file systems, configuration files, local databases, virtual machine files, or process memory, to find files of interest and sensitive data prior to Exfiltration.
attack.mitre.org →
T1083 File and Directory Discovery Discovery
Adversaries may enumerate files and directories or may search in specific locations of a host or network share for certain information within a file system.
attack.mitre.org →
Why these techniques?

Remote LFI vulnerability in public-facing WordPress theme enables exploitation of public-facing application (T1190) for arbitrary local file reads (T1005) and file/directory discovery (T1083), with potential local PHP execution.

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

CVEs Like This One

CVE-2025-58898Shared CWE-98
CVE-2026-22380Shared CWE-98
CVE-2025-58933Shared CWE-98
CVE-2026-22432Shared CWE-98
CVE-2026-22363Shared CWE-98
CVE-2025-67946Shared CWE-98
CVE-2025-48290Shared CWE-98
CVE-2025-58927Shared CWE-98
CVE-2025-59550Shared CWE-98
CVE-2025-69314Shared CWE-98

Affected Assets

Mitigating Controls

Mitigating Controls (NIST 800-53 r5) AI

SI-10 Information Input Validation good match
prevent

Directly mitigates CWE-98 by validating filenames and parameters used in PHP include/require statements to prevent local file inclusion.

SI-2 Flaw Remediation good match
prevent

Requires timely remediation of the specific flaw in the Artrium WordPress theme versions up to 1.0.14 via patching as advised by Patchstack.

CM-6 Configuration Settings partial match
prevent

Enforces secure configuration settings such as PHP open_basedir or disabling allow_url_include to restrict arbitrary file access even if input validation fails.

References