Cyber Resilience

CVE-2026-39677

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-2026-39677 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 CM-6 (Configuration Settings) and SI-10 (Information Input Validation).

Deeper analysis

CVE-2026-39677 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 Emphires WordPress theme developed by Creatives_Planet. This issue affects all versions of Emphires from n/a through 3.9 and is associated with CWE-98. The vulnerability was published on 2026-04-08.

The vulnerability carries a CVSS v3.1 base score of 7.5 (High), with an attack vector of Network (AV:N), high attack complexity (AC:H), low privileges required (PR:L), no user interaction (UI:N), and unchanged scope (S:U). An attacker meeting these conditions can achieve high impacts on confidentiality, integrity, and availability (C:H/I:H/A:H), potentially allowing unauthorized access to local files on the server.

Advisories, including the Patchstack database entry at https://patchstack.com/database/Wordpress/Theme/emphires/vulnerability/wordpress-emphires-theme-3-9-local-file-inclusion-vulnerability?_s_id=cve, provide details on the vulnerability in the Emphires WordPress theme version 3.9.

EU & UK References

Vulnerability details

Improper Control of Filename for Include/Require Statement in PHP Program ('PHP Remote File Inclusion') vulnerability in Creatives_Planet Emphires emphires allows PHP Local File Inclusion.This issue affects Emphires: from n/a through <= 3.9.

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 enables exploitation of public-facing applications (T1190) and direct unauthorized access to 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-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

Requires timely remediation of the known PHP Local File Inclusion flaw in the Emphires WordPress theme to prevent exploitation.

SI-10 Information Input Validation good match
prevent

Mandates validation of user-supplied filenames before use in PHP include/require statements to block malicious local file inclusion paths.

CM-6 Configuration Settings good match
prevent

Enforces secure PHP configuration settings such as open_basedir restrictions and disabling allow_url_include to mitigate file inclusion vulnerabilities.

References