Cyber Resilience

CVE-2026-27994

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-2026-27994 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-2026-27994 is an Improper Control of Filename for Include/Require Statement in PHP Program vulnerability, described as PHP Remote File Inclusion but enabling PHP Local File Inclusion (CWE-98), affecting the ThemeREX Tediss WordPress theme in versions from n/a through 1.2.4.

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 by unauthenticated attackers over the network. It requires high attack complexity with no user interaction, allowing successful exploits to result in high impacts on confidentiality, integrity, and availability.

Mitigation details are available in the Patchstack advisory at https://patchstack.com/database/Wordpress/Theme/tediss/vulnerability/wordpress-tediss-theme-1-2-4-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 Tediss tediss allows PHP Local File Inclusion.This issue affects Tediss: from n/a through <= 1.2.4.

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 LFI in a public-facing WordPress theme, directly enabling exploitation of a public-facing application.

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

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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

Directly mitigates the CVE by requiring timely identification, reporting, and patching of the vulnerable PHP include/require flaw in the Tediss WordPress theme.

SI-10 Information Input Validation good match
prevent

Prevents exploitation of the improper filename control by enforcing validation of user-supplied inputs used in PHP include/require statements to block malicious local file paths.

CM-6 Configuration Settings partial match
prevent

Mitigates the vulnerability through secure configuration settings for PHP, such as open_basedir restrictions and disabling dangerous functions like allow_url_include.

References