CVE-2026-27343

High

Published: 19 February 2026

Published

19 February 2026

Modified

15 April 2026

KEV Added

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Patch

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CVSS Score v3.1 7.5 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Score 0.0017 38.1th percentile

Risk Priority 15 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2026-27343 is a high-severity PHP Remote File Inclusion (CWE-98) vulnerability. Its CVSS base score is 7.5 (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).

Deeper analysis

CVE-2026-27343 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 VanKarWai Airtifact WordPress theme. This issue affects Airtifact versions from n/a through 1.2.91 and is associated with CWE-98. The vulnerability was published on 2026-02-19 and carries a CVSS v3.1 base score of 7.5 (AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H).

Exploitation requires low privileges (PR:L) and can occur over the network (AV:N) with high attack complexity (AC:H) and no user interaction (UI:N). Successful attacks have unchanged scope (S:U) and high impacts on confidentiality, integrity, and availability (C:H/I:H/A:H), potentially allowing attackers to read or execute arbitrary local files on the server.

The Patchstack advisory at https://patchstack.com/database/Wordpress/Theme/airtifact/vulnerability/wordpress-airtifact-theme-1-2-91-local-file-inclusion-vulnerability?_s_id=cve provides details on this Local File Inclusion vulnerability in the Airtifact WordPress theme version 1.2.91.

EU & UK References

🇪🇺 ENISA EUVD: EUVD-2026-8348

Vulnerability details

Improper Control of Filename for Include/Require Statement in PHP Program ('PHP Remote File Inclusion') vulnerability in VanKarWai Airtifact airtifact allows PHP Local File Inclusion.This issue affects Airtifact: from n/a through <= 1.2.91.

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 →

T1005 Data from Local System Collection

Adversaries may search local system sources, such as file systems, configuration files, local databases, virtual machine files, or process memory, to find files of interest and sensitive data prior to Exfiltration.

attack.mitre.org →

Why these techniques?

LFI in public-facing WordPress theme directly enables network exploitation of the application (T1190) and arbitrary local file reads/executions (T1005).

Confidence: HIGH · MITRE ATT&CK Enterprise v18.1