Cyber Resilience

CVE-2026-22405

High

Published: 05 March 2026

Published
05 March 2026
Modified
22 April 2026
KEV Added
—
Patch
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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 0.0050 39.1th percentile
Risk Priority 55 floored blend · peak EPSS

Summary

CVE-2026-22405 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 39.1th 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-2026-22405 is an Improper Control of Filename for Include/Require Statement in PHP Program vulnerability, known as PHP Remote File Inclusion but enabling PHP Local File Inclusion (CWE-98), in the Overton WordPress theme developed by Mikado-Themes. This flaw affects Overton versions from n/a through 1.3 inclusive. It carries 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), indicating high severity due to network accessibility and significant impacts.

Unauthenticated remote attackers can exploit this vulnerability over the network without user interaction, though it requires high attack complexity. Exploitation allows attackers to perform local file inclusion, potentially leading to high confidentiality, integrity, and availability impacts on the affected WordPress site.

The Patchstack advisory at https://patchstack.com/database/Wordpress/Theme/overton/vulnerability/wordpress-overton-theme-1-3-local-file-inclusion-vulnerability?_s_id=cve documents this local file inclusion issue in Overton theme version 1.3 and provides vulnerability details for mitigation.

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 Mikado-Themes Overton overton allows PHP Local File Inclusion.This issue affects Overton: from n/a through <= 1.3.

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 →
Why these techniques?

The vulnerability is a remote Local File Inclusion (LFI) in a public-facing WordPress theme, directly enabling exploitation of a public-facing application for potential RCE and data exposure.

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

CVEs Like This One

CVE-2025-58923Shared CWE-98
CVE-2025-69057Shared CWE-98
CVE-2024-54263Shared CWE-98
CVE-2026-28035Shared CWE-98
CVE-2026-28024Shared CWE-98
CVE-2025-67525Shared CWE-98
CVE-2025-22707Shared CWE-98
CVE-2025-69375Shared CWE-98
CVE-2026-22443Shared CWE-98
CVE-2025-53198Shared CWE-98

Affected Assets

Mitigating Controls

Mitigating Controls (NIST 800-53 r5) AI

SI-2 Flaw Remediation good match
prevent

Directly mitigates the LFI vulnerability by requiring timely identification, testing, and patching of the flawed PHP include/require logic in the Overton theme.

SI-10 Information Input Validation good match
prevent

Prevents exploitation by validating and sanitizing user-supplied filename inputs before they are used in PHP include/require statements.

SC-7 Boundary Protection partial match
preventdetect

Boundary protection via web application firewalls can block or detect network requests exploiting the improper filename control for LFI.

References