Cyber Resilience

CVE-2026-28068

High

Published: 05 March 2026

Published
05 March 2026
Modified
22 April 2026
KEV Added
—
Patch
—
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-2026-28068 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-2026-28068 is an Improper Control of Filename for Include/Require Statement in PHP Program vulnerability, known as PHP Remote File Inclusion, that allows PHP Local File Inclusion in the ThemeREX Rhythmo WordPress theme. This issue affects Rhythmo versions from n/a through 1.3.4 and is associated with CWE-98. The vulnerability was published on 2026-03-05 with 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).

Unauthenticated remote attackers (PR:N) can exploit this vulnerability over the network (AV:N) without user interaction (UI:N), though it requires high attack complexity (AC:H). Successful exploitation enables high-impact consequences on confidentiality, integrity, and availability (C:H/I:H/A:H), potentially allowing attackers to include and execute local files on the server.

Mitigation details are available in the Patchstack advisory at https://patchstack.com/database/Wordpress/Theme/rhythmo/vulnerability/wordpress-rhythmo-theme-1-3-4-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 Rhythmo rhythmo allows PHP Local File Inclusion.This issue affects Rhythmo: from n/a through <= 1.3.4.

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 →
T1552.001 Credentials In Files Credential Access
Adversaries may search local file systems and remote file shares for files containing insecurely stored credentials.
attack.mitre.org →
Why these techniques?

LFI vulnerability in public-facing WordPress theme enables exploitation of public-facing application (T1190) and facilitates access to credentials in local files like configuration files (T1552.001).

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

CVEs Like This One

CVE-2025-60198Shared CWE-98
CVE-2025-48330Shared CWE-98
CVE-2025-64223Shared CWE-98
CVE-2025-62010Shared CWE-98
CVE-2026-22495Shared CWE-98
CVE-2026-28094Shared CWE-98
CVE-2026-27996Shared CWE-98
CVE-2025-68984Shared CWE-98
CVE-2026-25382Shared CWE-98
CVE-2025-60056Shared CWE-98

Affected Assets

Mitigating Controls

Mitigating Controls (NIST 800-53 r5) AI

SI-2 Flaw Remediation good match
prevent

Directly remediates the PHP Local File Inclusion flaw in the Rhythmo theme by applying vendor patches or updates as specified in the Patchstack advisory.

SI-10 Information Input Validation good match
prevent

Validates and sanitizes untrusted inputs used in PHP include/require statements to block malicious filenames enabling LFI exploitation.

CM-6 Configuration Settings partial match
prevent

Establishes secure baseline PHP configuration settings like open_basedir and disabling allow_url_include to restrict file inclusion capabilities.

References