Cyber Resilience

CVE-2026-27334

High

Published: 05 March 2026

Published
05 March 2026
Modified
22 April 2026
KEV Added
—
Patch
—
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 0.0040 32.0th percentile
Risk Priority 55 floored blend · peak EPSS

Summary

CVE-2026-27334 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 32.0th 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-2026-27334 is an Improper Control of Filename for Include/Require Statement in PHP Program vulnerability, classified under CWE-98 and described as enabling PHP Local File Inclusion, in the Alchemists WordPress theme developed by dan_fisher. It affects all versions of the theme from n/a through 4.6.0 and was published on 2026-03-05.

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 is possible over the network by unauthenticated attackers with no user interaction required, though it demands high attack complexity. Successful exploitation can result in high impacts to confidentiality, integrity, and availability, such as unauthorized access to local files on the server.

Patchstack's advisory at https://patchstack.com/database/Wordpress/Theme/alchemists/vulnerability/wordpress-alchemists-theme-4-6-0-local-file-inclusion-vulnerability?_s_id=cve documents this Local File Inclusion vulnerability specifically in Alchemists theme version 4.6.0 and provides details relevant to mitigation for affected WordPress installations.

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 dan_fisher Alchemists alchemists allows PHP Local File Inclusion.This issue affects Alchemists: from n/a through <= 4.6.0.

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?

CVE-2026-27334 is a Local File Inclusion vulnerability in a public-facing WordPress theme, directly enabling T1190 (Exploit Public-Facing Application) for unauthenticated remote attackers to include arbitrary local files, leading to high-impact compromise.

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

Timely flaw remediation directly patches the PHP Local File Inclusion vulnerability in the Alchemists WordPress theme, preventing exploitation across affected versions.

SI-10 Information Input Validation good match
prevent

Validates user-supplied filenames in PHP include/require statements to block path traversal and local file inclusion attempts.

CM-6 Configuration Settings partial match
prevent

Enforces secure PHP configuration settings such as open_basedir restrictions to limit file access and mitigate LFI exploitation.

References