CVE-2026-28089
Published: 05 March 2026
Summary
CVE-2026-28089 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-2026-28089 is an Improper Control of Filename for Include/Require Statement in PHP Program vulnerability, classified as a PHP Remote File Inclusion issue that enables PHP Local File Inclusion, affecting the ThemeREX Daiquiri WordPress theme. This flaw impacts all versions from n/a through 1.2.4 and is associated with CWE-98. Published on 2026-03-05, it 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.
Unauthenticated attackers (PR:N) can exploit this vulnerability remotely over the network (AV:N) without requiring user interaction (UI:N), though it demands high attack complexity (AC:H). Successful exploitation allows high-impact compromise of confidentiality, integrity, and availability (C:H/I:H/A:H) within the unchanged security scope (S:U), potentially enabling attackers to read local files or escalate to more severe outcomes depending on the included files.
Mitigation details are available in the Patchstack advisory at https://patchstack.com/database/Wordpress/Theme/daiquiri/vulnerability/wordpress-daiquiri-theme-1-2-4-local-file-inclusion-vulnerability?_s_id=cve, which documents the local file inclusion vulnerability in the Daiquiri theme version 1.2.4.
OWASP Top 10 for Web (2025)
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2026-9744
Vulnerability details
Improper Control of Filename for Include/Require Statement in PHP Program ('PHP Remote File Inclusion') vulnerability in ThemeREX Daiquiri daiquiri allows PHP Local File Inclusion.This issue affects Daiquiri: from n/a through <= 1.2.4.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
LFI vulnerability in public-facing WordPress theme enables unauthenticated remote exploitation of public-facing application (T1190) and facilitates reading data from local system files (T1005).
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Directly mitigates the improper filename control in PHP include/require by enforcing validation of user-supplied inputs to prevent local file inclusion.
Requires timely remediation of the specific LFI flaw in the Daiquiri WordPress theme through patching or upgrades beyond version 1.2.4.
Enforces secure configuration settings in PHP, such as open_basedir or disabling allow_url_include, to restrict arbitrary file access even if input validation fails.