Cyber Resilience

CVE-2026-27988

High

Published: 05 March 2026

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

Summary

CVE-2026-27988 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 CM-6 (Configuration Settings) and SI-10 (Information Input Validation).

Deeper analysis

CVE-2026-27988 is an Improper Control of Filename for Include/Require Statement in PHP Program vulnerability, classified under CWE-98 and commonly known as PHP Remote File Inclusion, that enables PHP Local File Inclusion in the ThemeREX Equadio WordPress theme. This issue affects all versions of Equadio from n/a through 1.1.3. The vulnerability was published on 2026-03-05 and 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 high severity due to its potential for significant impact despite requiring high attack complexity.

Remote, unauthenticated attackers can exploit this vulnerability over the network without user interaction. Successful exploitation allows attackers to perform local file inclusion, potentially leading to high confidentiality, integrity, and availability impacts, such as unauthorized access to sensitive files or system compromise depending on the included files.

The Patchstack advisory provides details on this WordPress Equadio theme vulnerability, including mitigation guidance, available at https://patchstack.com/database/Wordpress/Theme/equadio/vulnerability/wordpress-equadio-theme-1-1-3-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 ThemeREX Equadio equadio allows PHP Local File Inclusion.This issue affects Equadio: from n/a through <= 1.1.3.

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?

LFI vulnerability in a public-facing WordPress theme enables unauthenticated remote exploitation of a 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

Directly validates and sanitizes user-supplied filenames before PHP include/require operations to prevent local file inclusion in the Equadio theme.

SI-2 Flaw Remediation good match
prevent

Identifies, patches, or remediates the specific improper filename control flaw in vulnerable Equadio theme versions up to 1.1.3.

CM-6 Configuration Settings good match
prevent

Enforces secure PHP configuration settings like open_basedir to restrict file system access and limit the scope of local file inclusion exploits.

References