CVE-2026-22512

High

Published: 25 March 2026

Published

25 March 2026

Modified

24 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 37.2th percentile

Risk Priority 16 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2026-22512 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 37.2th 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).

Threat & Defense at a Glance

What attackers do: exploitation maps to Exploit Public-Facing Application (T1190). What defenders deploy: see the NIST 800-53 controls recommended below.

Threat & Defense Details

Mitigating Controls (NIST 800-53 r5)AI

SI-10 Information Input Validation good match

prevent

Directly addresses improper filename control in PHP include/require by validating user-supplied inputs to block malicious local file inclusion paths.

SI-9 Information Input Restrictions good match

prevent

Restricts information inputs such as filenames or paths to organization-defined safe values, preventing exploitation of the LFI vulnerability in the Roisin theme.

SI-2 Flaw Remediation good match

prevent

Mandates timely identification, reporting, and patching of flaws like this PHP LFI vulnerability in vulnerable WordPress theme versions up to 1.2.1.

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?

This is a Local File Inclusion vulnerability in a public-facing WordPress theme, allowing unauthenticated remote exploitation over the network for file inclusion, data disclosure, or code execution, directly mapping to T1190: Exploit Public-Facing Application.

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

NVD Description

Improper Control of Filename for Include/Require Statement in PHP Program ('PHP Remote File Inclusion') vulnerability in Elated-Themes Roisin roisin allows PHP Local File Inclusion.This issue affects Roisin: from n/a through <= 1.2.1.

Deeper analysisAI

CVE-2026-22512 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 Roisin WordPress theme by Elated-Themes. It affects all versions of Roisin from n/a through 1.2.1.

The vulnerability has 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 exploitation over the network with high attack complexity, no privileges required, and no user interaction. Remote unauthenticated attackers can leverage it to achieve high impacts on confidentiality, integrity, and availability through local file inclusion.

Mitigation details are available in the Patchstack advisory at https://patchstack.com/database/Wordpress/Theme/roisin/vulnerability/wordpress-roisin-theme-1-2-1-local-file-inclusion-vulnerability?_s_id=cve, which documents the issue in the WordPress Roisin theme version 1.2.1.