Cyber Resilience

CVE-2026-39684

High

Published: 08 April 2026

Published
08 April 2026
Modified
24 April 2026
KEV Added
—
Patch
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CVSS Score v3.1 7.5 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.0015 34.9th percentile
Risk Priority 15 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2026-39684 is a high-severity PHP Remote File Inclusion (CWE-98) vulnerability. Its CVSS base score is 7.5 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 34.9th 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-2026-39684 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 (CWE-98), in the OrganicFood WordPress theme developed by UnTheme. The issue affects OrganicFood versions from n/a through 3.6.4.

The vulnerability can be exploited remotely (AV:N) by attackers with low privileges (PR:L), requiring high attack complexity (AC:H) and no user interaction (UI:N). Successful exploitation yields high impacts on confidentiality, integrity, and availability (C:H/I:H/A:H), with an overall CVSS 3.1 score of 7.5 and unchanged scope (S:U), potentially allowing local file disclosure or inclusion leading to further compromise.

Patchstack's advisory documents the local file inclusion vulnerability specifically in the WordPress OrganicFood theme up to version 3.6.4, providing details on the affected component.

EU & UK References

Vulnerability details

Improper Control of Filename for Include/Require Statement in PHP Program ('PHP Remote File Inclusion') vulnerability in UnTheme OrganicFood organicfood allows PHP Local File Inclusion.This issue affects OrganicFood: from n/a through <= 3.6.4.

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 →
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 →
Why these techniques?

LFI vulnerability in public-facing WordPress theme directly enables remote exploitation of the application (T1190) and local file disclosure/inclusion for data access (T1005).

Confidence: HIGH · MITRE ATT&CK Enterprise v18.1

CVEs Like This One

CVE-2025-68537Shared CWE-98
CVE-2026-28079Shared CWE-98
CVE-2026-28061Shared CWE-98
CVE-2026-28048Shared CWE-98
CVE-2026-22516Shared CWE-98
CVE-2026-28120Shared CWE-98
CVE-2025-67992Shared CWE-98
CVE-2025-31432Shared CWE-98
CVE-2026-39613Shared CWE-98
CVE-2025-26957Shared CWE-98

Affected Assets

Mitigating Controls

Mitigating Controls (NIST 800-53 r5) AI

SI-2 Flaw Remediation good match
prevent

Directly requires timely identification, reporting, and patching of the PHP Local File Inclusion flaw in the OrganicFood WordPress theme up to version 3.6.4.

SI-10 Information Input Validation good match
prevent

Mandates validation of filename inputs to include/require statements, preventing attackers from specifying arbitrary local files for inclusion.

CM-6 Configuration Settings partial match
prevent

Enforces secure configuration settings in PHP, such as open_basedir restrictions, to limit the scope of file access even if improper includes occur.

References