Cyber Resilience

CVE-2026-28074

CriticalRCE

Published: 05 March 2026

Published
05 March 2026
Modified
22 April 2026
KEV Added
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Patch
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CVSS Score v3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.0037 29.2th percentile
Risk Priority 70 floored blend · peak EPSS

Summary

CVE-2026-28074 is a critical-severity Deserialization of Untrusted Data (CWE-502) vulnerability. Its CVSS base score is 9.8 (Critical).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 29.2th 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 RA-5 (Vulnerability Monitoring and Scanning) and SI-10 (Information Input Validation).

Deeper analysis

CVE-2026-28074 is a Deserialization of Untrusted Data vulnerability (CWE-502) in the ThemeREX Pizza House WordPress theme, known as pizzahouse, that enables Object Injection. The issue affects Pizza House theme versions from an unspecified initial release through 1.4.0.

The vulnerability carries a CVSS v3.1 base score of 9.8 (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H), indicating it is exploitable remotely by unauthenticated attackers with low attack complexity and no requirement for user interaction. Exploitation can lead to high impacts on confidentiality, integrity, and availability.

Patchstack's advisory provides details on the PHP Object Injection vulnerability in the WordPress Pizza House theme version 1.4.0, available at https://patchstack.com/database/Wordpress/Theme/pizzahouse/vulnerability/wordpress-pizza-house-theme-1-4-0-php-object-injection-vulnerability?_s_id=cve.

OWASP Top 10 for Web (2025)

A08:2025 Software or Data Integrity Failures

EU & UK References

Vulnerability details

Deserialization of Untrusted Data vulnerability in ThemeREX Pizza House pizzahouse allows Object Injection.This issue affects Pizza House: from n/a through <= 1.4.0.

CWE(s)
CWE-502

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?

Remote unauthenticated PHP object injection (deserialization) in a public-facing WordPress theme directly enables exploitation of public-facing applications (T1190) with full C/I/A impact.

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

CVEs Like This One

CVE-2025-62368Shared CWE-502
CVE-2025-68903Shared CWE-502
CVE-2025-67911Shared CWE-502
CVE-2025-54014Shared CWE-502
CVE-2026-22505Shared CWE-502
CVE-2025-53078Shared CWE-502
CVE-2026-43633Shared CWE-502
CVE-2025-60039Shared CWE-502
CVE-2026-25429Shared CWE-502
CVE-2025-7697Shared CWE-502

Affected Assets

Mitigating Controls

Mitigating Controls (NIST 800-53 r5) AI

SI-2 Flaw Remediation good match
prevent

Flaw remediation directly mitigates the deserialization of untrusted data vulnerability by patching or updating the affected Pizza House WordPress theme to version beyond 1.4.0.

SI-10 Information Input Validation good match
prevent

Information input validation prevents object injection by ensuring untrusted data is validated and sanitized before deserialization in the theme.

RA-5 Vulnerability Monitoring and Scanning good match
detect

Vulnerability monitoring and scanning identifies the PHP object injection flaw (CVE-2026-28074) in installed WordPress themes for prompt remediation.

References