Cyber Resilience

CVE-2026-39613

High

Published: 08 April 2026

Published
08 April 2026
Modified
24 April 2026
KEV Added
—
Patch
—
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-2026-39613 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-2026-39613 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 kutethemes Boutique (kute-boutique) WordPress theme. This flaw affects all versions of the Boutique theme up to and including 2.3.3, with no lower bound specified.

The vulnerability carries a CVSS v3.1 base score of 7.5 (AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H), indicating exploitation over the network by low-privileged authenticated users (PR:L) without user interaction, though it requires high attack complexity (AC:H). Successful exploitation allows attackers to achieve high impacts on confidentiality, integrity, and availability, typically through local file inclusion to access or manipulate sensitive files on the server.

Mitigation details are available in the Patchstack advisory at https://patchstack.com/database/Wordpress/Theme/kute-boutique/vulnerability/wordpress-boutique-theme-2-3-3-local-file-inclusion-vulnerability?_s_id=cve, which covers the Local File Inclusion issue in the WordPress Boutique theme version 2.3.3.

EU & UK References

Vulnerability details

Improper Control of Filename for Include/Require Statement in PHP Program ('PHP Remote File Inclusion') vulnerability in kutethemes Boutique kute-boutique allows PHP Local File Inclusion.This issue affects Boutique: from n/a through <= 2.3.3.

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?

The LFI vulnerability in a public-facing WordPress theme directly enables exploitation of the web application (T1190) and facilitates access to sensitive local server files (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-2025-26957Shared CWE-98
CVE-2026-22435Shared CWE-98

Affected Assets

Mitigating Controls

Mitigating Controls (NIST 800-53 r5) AI

SI-2 Flaw Remediation good match
prevent

Flaw remediation directly addresses the LFI vulnerability by identifying, prioritizing, and patching the improper filename control in the Boutique WordPress theme up to version 2.3.3.

SI-10 Information Input Validation good match
prevent

Information input validation enforces checks on filenames used in PHP include/require statements, preventing arbitrary local file inclusion by low-privileged users.

CM-6 Configuration Settings partial match
prevent

Configuration settings secure PHP environments by restricting file access paths (e.g., open_basedir) and disabling features like allow_url_include, mitigating LFI exploitation.

References