Cyber Posture

CVE-2026-28086

High

Published: 05 March 2026

Published
05 March 2026
Modified
22 April 2026
KEV Added
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Patch
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CVSS Score 8.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.0016 37.1th percentile
Risk Priority 16 60% EPSS · 20% KEV · 20% CVSS

Description

Improper Control of Filename for Include/Require Statement in PHP Program ('PHP Remote File Inclusion') vulnerability in ThemeREX Run Gran run-gran allows PHP Local File Inclusion.This issue affects Run Gran: from n/a through <= 2.0.

Mitigating Controls (NIST 800-53 r5)AI

SI-2 Flaw Remediation good match
prevent

Directly mitigates CVE-2026-28086 by requiring timely patching or updating of the vulnerable Run Gran WordPress theme to remediate the PHP local file inclusion flaw.

SI-10 Information Input Validation good match
prevent

Prevents exploitation of the improper filename control in PHP include/require statements by enforcing validation of user-supplied inputs used for local file inclusion.

RA-5 Vulnerability Monitoring and Scanning partial match
detect

Identifies the presence of CVE-2026-28086 in WordPress themes through regular vulnerability scanning, enabling proactive remediation.

Security SummaryAI

CVE-2026-28086 is an Improper Control of Filename for Include/Require Statement vulnerability, classified as PHP Local File Inclusion (CWE-98), affecting the Run Gran WordPress theme developed by ThemeREX. The issue impacts all versions of the run-gran theme up to and including 2.0, enabling attackers to manipulate include/require statements in PHP code.

The vulnerability carries a CVSS v3.1 base score of 8.1 (High), with vector AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H, indicating exploitation over the network by unauthenticated users (PR:N) with high attack complexity (AC:H) and no user interaction required. Successful exploitation allows local file inclusion, potentially resulting in high impacts to confidentiality, integrity, and availability, such as disclosure of sensitive server files or, in certain configurations, escalation to remote code execution.

Patchstack's advisory at https://patchstack.com/database/Wordpress/Theme/run-gran/vulnerability/wordpress-run-gran-theme-2-0-local-file-inclusion-vulnerability?_s_id=cve documents the vulnerability specifically in Run Gran theme version 2.0 and provides guidance on mitigation for WordPress environments.

Details

CWE(s)
CWE-98

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 →
Why these techniques?

CVE-2026-28086 is a remote/local file inclusion vulnerability in a public-facing WordPress theme, directly enabling exploitation of a public-facing application (T1190).

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

References