CVE-2026-27339
Raw vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:HCVSS and EPSS are reproduced from their sources (NVD, FIRST EPSS). Risk Priority is our own derived reading, not an NVD score.
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 48th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
The strongest mitigations our analysis identified map to SA-11 (Developer Testing and Evaluation) and SI-10 (Information Input Validation) — see the control section below for these in your framework.
Deeper analysis AI-assisted summary
Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.
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 Data
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…
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Blog WordPress Theme: from n/a through <= 1.0.2.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise Techniques
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Developer testing and static analysis can discover missing filename restrictions before deployment.
Validating all inputs before they reach include/require statements directly stops untrusted filenames from being used.
Enforcing access authorizations on resources limits what an included file can reach even if a bad name is supplied.
Information-flow rules can block the loading of external or unauthorized files into the PHP process.
Mitigating Controls (NIST CSF 2.0) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.
Secure SDLC practices such as input validation and allow-listing of include paths directly prevent the weakness.
Hardened runtime configuration (e.g., allow_url_include=off) directly blocks RFI even if code is flawed.
Execution restrictions can prevent the remote payload from running, while eliminating the weakness reduces the need for such controls.
Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.
Security testing can detect RFI but does not prevent the weakness by itself.
Secure coding standards directly require whitelisting and sanitization of filenames used in include/require statements.