Cyber Resilience

CVE-2026-27326

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-2026-27326 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-2026-27326 is an Improper Control of Filename for Include/Require Statement in PHP Program vulnerability, classified under CWE-98 and enabling PHP Local File Inclusion (LFI), in the AC Services | HVAC, Air Conditioning & Heating Company WordPress theme (slug: window-ac-services) developed by axiomthemes. The issue affects all versions from n/a through 1.2.5 and was published on 2026-03-05.

The vulnerability 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), indicating it can be exploited remotely by unauthenticated attackers (no privileges required) over the network, though with high attack complexity and no user interaction needed. Successful exploitation grants high-impact access to confidentiality, integrity, and availability, allowing attackers to include and potentially execute arbitrary local files on the server.

Mitigation guidance is provided in the Patchstack advisory at https://patchstack.com/database/Wordpress/Theme/window-ac-services/vulnerability/wordpress-ac-services-hvac-air-conditioning-heating-company-wordpress-theme-theme-1-2-5-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 axiomthemes AC Services | HVAC, Air Conditioning & Heating Company WordPress Theme window-ac-services allows PHP Local File Inclusion.This issue affects AC Services | HVAC,…

more

Air Conditioning & Heating Company WordPress Theme: from n/a through <= 1.2.5.

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?

The vulnerability is an unauthenticated remote Local File Inclusion in a public-facing WordPress theme, allowing execution of arbitrary local PHP files, directly enabling T1190: Exploit Public-Facing Application.

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-10 Information Input Validation good match
prevent

SI-10 mandates validation of information inputs, directly preventing improper filename control in PHP include/require statements that enable local file inclusion.

SI-2 Flaw Remediation good match
preventrecover

SI-2 requires timely identification, reporting, and correction of system flaws, such as patching the vulnerable WordPress theme to remediate the LFI vulnerability.

CM-6 Configuration Settings partial match
prevent

CM-6 establishes and enforces secure configuration settings like PHP open_basedir restrictions to limit arbitrary local file access exploited by LFI.

References