Cyber Resilience

CVE-2026-28105

CriticalRCE

Published: 05 March 2026

Published
05 March 2026
Modified
22 April 2026
KEV Added
—
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-2026-28105 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-2026-28105 is a Deserialization of Untrusted Data vulnerability (CWE-502) in the ThemeREX Good Energy (goodenergy) WordPress theme, enabling Object Injection. The issue affects Good Energy versions from n/a through 1.7.7, as published on 2026-03-05.

With 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), the vulnerability can be exploited by unauthenticated remote attackers requiring low complexity and no user interaction. Exploitation allows high-impact compromise of confidentiality, integrity, and availability through object injection.

The Patchstack advisory (https://patchstack.com/database/Wordpress/Theme/goodenergy/vulnerability/wordpress-good-energy-theme-1-7-7-php-object-injection-vulnerability?_s_id=cve) details the PHP object injection vulnerability in Good Energy theme version 1.7.7, recommending mitigation via updating to a non-vulnerable version beyond 1.7.7.

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 Good Energy goodenergy allows Object Injection.This issue affects Good Energy: from n/a through <= 1.7.7.

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 T1190 Exploit Public-Facing Application, resulting in full CIA impact without requiring prior access or user interaction.

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

Requires identification, prioritization, and correction of the deserialization flaw in Good Energy WordPress theme versions through <=1.7.7 via patching or updates.

SI-10 Information Input Validation good match
prevent

Enforces validation of untrusted data inputs to block malicious object injection via deserialization in the vulnerable theme.

RA-5 Vulnerability Monitoring and Scanning good match
detect

Mandates vulnerability scanning to identify the PHP deserialization vulnerability (CVE-2026-28105) in the Good Energy theme.

References