CVE-2026-27337
Published: 05 March 2026
Summary
CVE-2026-27337 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 39.6th 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-2026-27337 is an Improper Control of Filename for Include/Require Statement in PHP Program vulnerability, classified as PHP Remote File Inclusion but enabling PHP Local File Inclusion (CWE-98), in the AncoraThemes Chronicle - Lifestyle Magazine & Blog WordPress Theme. This flaw affects all versions of the Chronicle theme from n/a through 1.0 inclusive.
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 over the network by unauthenticated attackers with no user interaction required, though it demands high attack complexity. Successful exploitation allows attackers to achieve high impacts on confidentiality, integrity, and availability, potentially enabling local file inclusion to disclose sensitive data or execute arbitrary code on the server.
The Patchstack advisory (https://patchstack.com/database/Wordpress/Theme/chronicle/vulnerability/wordpress-chronicle-lifestyle-magazine-blog-wordpress-theme-theme-1-0-local-file-inclusion-vulnerability?_s_id=cve) documents the local file inclusion vulnerability in Chronicle theme version 1.0.
OWASP Top 10 for Web (2025)
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2026-9610
Vulnerability details
Improper Control of Filename for Include/Require Statement in PHP Program ('PHP Remote File Inclusion') vulnerability in AncoraThemes Chronicle - Lifestyle Magazine & Blog WordPress Theme chronicle allows PHP Local File Inclusion.This issue affects Chronicle - Lifestyle Magazine & Blog WordPress…
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Theme: from n/a through <= 1.0.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
LFI in public-facing WordPress theme directly enables T1190 (Exploit Public-Facing Application) for unauthenticated network access; successful exploitation permits reading arbitrary local files, mapping to T1005 (Data from Local System) for sensitive data disclosure or config access.
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Directly remediates the PHP local file inclusion flaw in the Chronicle WordPress theme by identifying, patching, or removing the vulnerable component.
Enforces validation of filename parameters supplied to PHP include/require statements, preventing unauthorized local file inclusion via path traversal.
Establishes secure PHP configuration settings such as open_basedir restrictions to limit the scope of file access and mitigate local file inclusion impacts.