CVE-2026-27339

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-2026-27339 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-2026-27339 is an Improper Control of Filename for Include/Require Statement in PHP Program vulnerability, classified under CWE-98 and described as a PHP Remote File Inclusion issue that enables PHP Local File Inclusion. It affects the Buzz Stone | Magazine & Viral Blog WordPress Theme (buzzstone) developed by AncoraThemes, impacting all versions from n/a through 1.0.2. The vulnerability was published on 2026-03-05 with a CVSS 3.1 base score of 8.1 (AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H).

Remote unauthenticated attackers can exploit this vulnerability over the network, requiring high attack complexity but no user interaction or privileges. Successful exploitation allows attackers to perform local file inclusion of PHP files, potentially resulting in high-impact confidentiality breaches through sensitive data exposure, integrity violations via arbitrary code execution, and availability disruptions.

The Patchstack advisory at https://patchstack.com/database/Wordpress/Theme/buzzstone/vulnerability/wordpress-buzz-stone-magazine-viral-blog-wordpress-theme-theme-1-0-2-local-file-inclusion-vulnerability?_s_id=cve details the vulnerability in the buzzstone WordPress theme.

OWASP Top 10 for Web (2025)

EU & UK References

🇪🇺 ENISA EUVD: EUVD-2026-9612

Vulnerability details

Improper Control of Filename for Include/Require Statement in PHP Program ('PHP Remote File Inclusion') vulnerability in AncoraThemes Buzz Stone | Magazine & Viral Blog WordPress Theme buzzstone allows PHP Local File Inclusion.This issue affects Buzz Stone | Magazine & Viral…

Blog WordPress Theme: from n/a through <= 1.0.2.

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 file inclusion (RFI/LFI) in a public-facing WordPress theme, directly enabling exploitation of a public-facing web application.

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