Cyber Resilience

CVE-2026-22397

High

Published: 05 March 2026

Published
05 March 2026
Modified
23 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-2026-22397 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-2026-22397 is an Improper Control of Filename for Include/Require Statement in PHP Program vulnerability, referred to as PHP Remote File Inclusion but enabling PHP Local File Inclusion, in the Mikado-Themes Fleur WordPress theme. This issue affects Fleur versions from n/a through 2.2.1 and is associated with CWE-98. The vulnerability was published on 2026-03-05 with 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).

Unauthenticated remote attackers can exploit this vulnerability over the network without user interaction, though it requires high attack complexity. Successful exploitation can result in high impacts to confidentiality, integrity, and availability, potentially allowing attackers to include and execute local PHP files on the server.

Mitigation details are available in the Patchstack advisory at https://patchstack.com/database/Wordpress/Theme/fleur/vulnerability/wordpress-fleur-theme-2-0-local-file-inclusion-vulnerability?_s_id=cve.

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 Fleur fleur allows PHP Local File Inclusion.This issue affects Fleur: from n/a through <= 2.2.1.

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 →
T1083 File and Directory Discovery Discovery
Adversaries may enumerate files and directories or may search in specific locations of a host or network share for certain information within a file system.
attack.mitre.org →
T1552.001 Credentials In Files Credential Access
Adversaries may search local file systems and remote file shares for files containing insecurely stored credentials.
attack.mitre.org →
Why these techniques?

Unauthenticated remote exploitation of public-facing WordPress theme vulnerability (T1190) enables arbitrary local file inclusion, facilitating file and directory discovery (T1083) and access to unsecured credentials in files such as wp-config.php (T1552.001).

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

CVEs Like This One

CVE-2026-28094Shared CWE-98
CVE-2026-27080Shared CWE-98
CVE-2025-69409Shared CWE-98
CVE-2026-28034Shared CWE-98
CVE-2026-28053Shared CWE-98
CVE-2026-22478Shared CWE-98
CVE-2026-22415Shared CWE-98
CVE-2025-58803Shared CWE-98
CVE-2026-28021Shared CWE-98
CVE-2026-32500Shared CWE-98

Affected Assets

Mitigating Controls

Mitigating Controls (NIST 800-53 r5) AI

SI-2 Flaw Remediation good match
prevent

Directly remediates the PHP Local File Inclusion vulnerability by applying patches or updates to the affected Fleur WordPress theme versions up to 2.2.1.

SI-10 Information Input Validation good match
prevent

Enforces validation of filenames used in PHP include/require statements to block malicious local file inclusion attempts exploiting improper input control.

CM-6 Configuration Settings partial match
prevent

Establishes secure configuration settings for PHP, such as open_basedir restrictions, to limit the scope of local file access even if the vulnerability is exploited.

References