CVE-2026-22397
Published: 05 March 2026
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 38.1th 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).
Threat & Defense at a Glance
Threat & Defense Details
Mitigating Controls (NIST 800-53 r5)AI
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.
Enforces validation of filenames used in PHP include/require statements to block malicious local file inclusion attempts exploiting improper input control.
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.
MITRE ATT&CK Enterprise TechniquesAI
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).
NVD Description
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.
Deeper analysisAI
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.
Details
- CWE(s)