CVE-2026-22344

High

Published: 20 February 2026

Published

20 February 2026

Modified

15 April 2026

KEV Added

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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 0.0051 39.6th percentile

Risk Priority 55 floored blend · peak EPSS

Summary

CVE-2026-22344 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 39.6th 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-2026-22344 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 FiveStar WordPress theme developed by Mikado-Themes. The issue affects FiveStar versions from n/a through 1.7 inclusive. Published on 2026-02-20, 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) and maps to CWE-98.

Remote unauthenticated attackers can exploit this vulnerability over the network with high attack complexity and no user interaction required. Successful exploitation allows arbitrary local file inclusion, potentially leading to high-impact confidentiality, integrity, and availability violations, such as unauthorized access to sensitive files or system compromise depending on server configuration.

The Patchstack advisory at https://patchstack.com/database/Wordpress/Theme/fivestar/vulnerability/wordpress-fivestar-theme-1-7-local-file-inclusion-vulnerability?_s_id=cve provides details on this WordPress FiveStar theme vulnerability, including recommended mitigations such as updating to a patched version beyond 1.7 where available.

OWASP Top 10 for Web (2025)

EU & UK References

🇪🇺 ENISA EUVD: EUVD-2026-8243

Vulnerability details

Improper Control of Filename for Include/Require Statement in PHP Program ('PHP Remote File Inclusion') vulnerability in Mikado-Themes FiveStar fivestar allows PHP Local File Inclusion.This issue affects FiveStar: from n/a through <= 1.7.

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?

Unauthenticated remote local file inclusion (LFI) vulnerability in a public-facing WordPress theme enables exploitation of a public-facing web application, directly mapping to T1190.

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