Cyber Posture

CVE-2026-27080

HighUpdated

Published: 25 March 2026

Published
25 March 2026
Modified
24 April 2026
KEV Added
—
Patch
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CVSS Score 8.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.0016 37.0th percentile
Risk Priority 16 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2026-27080 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 37.0th 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).

Threat & Defense at a Glance

What attackers do: exploitation maps to Exploit Public-Facing Application (T1190) and 2 other techniques. What defenders deploy: see the NIST 800-53 controls recommended below.
Threat & Defense Details

Mitigating Controls (NIST 800-53 r5)AI

SI-2 Flaw Remediation good match
prevent

SI-2 requires identification, reporting, and correction of flaws like this PHP LFI vulnerability in the Deston theme through timely patching.

SI-10 Information Input Validation good match
prevent

SI-10 mandates validation of information inputs, directly preventing exploitation by ensuring filenames in PHP include/require statements are properly sanitized or whitelisted.

RA-5 Vulnerability Monitoring and Scanning partial match
detect

RA-5 vulnerability scanning identifies the CVE-2026-27080 LFI issue in deployed WordPress themes like Deston.

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 →
T1083 File and Directory Discovery Discovery
Adversaries may enumerate files and directories or may search in specific locations of a host or network share for certain information within a file system.
attack.mitre.org →
T1552.001 Credentials In Files Credential Access
Adversaries may search local file systems and remote file shares for files containing insecurely stored credentials.
attack.mitre.org →
Why these techniques?

LFI in public-facing WordPress theme enables remote exploitation of web app (T1190), file/directory discovery via traversal (T1083), and reading credentials from local files (T1552.001).

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

NVD Description

Improper Control of Filename for Include/Require Statement in PHP Program ('PHP Remote File Inclusion') vulnerability in Mikado-Themes Deston deston allows PHP Local File Inclusion.This issue affects Deston: from n/a through <= 1.0.

Deeper analysisAI

CVE-2026-27080 is an Improper Control of Filename for Include/Require Statement in PHP Program vulnerability, known as PHP Remote File Inclusion, that enables PHP Local File Inclusion in the Mikado-Themes Deston WordPress theme. This issue affects Deston versions from n/a through 1.0 and is associated with CWE-98.

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 is exploitable over the network by unauthenticated attackers requiring no user interaction, though high attack complexity is involved. Successful exploitation can result in high-impact compromises to confidentiality, integrity, and availability.

The Patchstack advisory at https://patchstack.com/database/Wordpress/Theme/deston/vulnerability/wordpress-deston-theme-1-0-local-file-inclusion-vulnerability?_s_id=cve details this local file inclusion vulnerability in the WordPress Deston theme version 1.0.

Details

CWE(s)
CWE-98

CVEs Like This One

CVE-2026-22397Shared CWE-98
CVE-2026-28094Shared CWE-98
CVE-2025-58803Shared CWE-98
CVE-2026-28053Shared CWE-98
CVE-2026-32500Shared CWE-98
CVE-2025-59558Shared CWE-98
CVE-2025-26137Shared CWE-98
CVE-2026-22478Shared CWE-98
CVE-2026-28021Shared CWE-98
CVE-2026-28034Shared CWE-98

References