Cyber Resilience

CVE-2025-54007

HighRCE

Published: 20 August 2025

Published
20 August 2025
Modified
23 April 2026
KEV Added
—
Patch
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CVSS Score v3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.0018 38.9th percentile
Risk Priority 18 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2025-54007 is a high-severity Deserialization of Untrusted Data (CWE-502) vulnerability. Its CVSS base score is 8.8 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 38.9th 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-2025-54007 is a Deserialization of Untrusted Data vulnerability (CWE-502) in the PickPlugins Post Grid and Gutenberg Blocks post-grid WordPress plugin, enabling Object Injection. This issue affects all versions from n/a through 2.3.11, as published on 2025-08-20.

The vulnerability carries a CVSS v3.1 base score of 8.8 (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H). Low-privileged authenticated users, such as WordPress contributors, can exploit it remotely with low attack complexity and no user interaction, potentially achieving high impacts on confidentiality, integrity, and availability via malicious object deserialization.

The Patchstack advisory at https://patchstack.com/database/Wordpress/Plugin/post-grid/vulnerability/wordpress-post-grid-and-gutenberg-blocks-plugin-2-3-11-php-object-injection-vulnerability?_s_id=cve details the vulnerability in the WordPress Post Grid and Gutenberg Blocks plugin version 2.3.11.

EU & UK References

Vulnerability details

Deserialization of Untrusted Data vulnerability in PickPlugins Post Grid and Gutenberg Blocks post-grid allows Object Injection.This issue affects Post Grid and Gutenberg Blocks: from n/a through <= 2.3.11.

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 →
T1068 Exploitation for Privilege Escalation Privilege Escalation
Adversaries may exploit software vulnerabilities in an attempt to elevate privileges.
attack.mitre.org →
Why these techniques?

PHP object injection via untrusted deserialization in a public-facing WordPress plugin directly enables remote exploitation (T1190) by low-privileged users to achieve full confidentiality/integrity/availability impact, constituting exploitation for privilege escalation (T1068).

Confidence: HIGH · MITRE ATT&CK Enterprise v18.1

CVEs Like This One

CVE-2025-60215Shared CWE-502
CVE-2026-24978Shared CWE-502
CVE-2025-49869Shared CWE-502
CVE-2026-27379Shared CWE-502
CVE-2026-27338Shared CWE-502
CVE-2026-33858Shared CWE-502
CVE-2026-6857Shared CWE-502
CVE-2025-36072Shared CWE-502
CVE-2025-64266Shared CWE-502
CVE-2025-53560Shared CWE-502

Affected Assets

Mitigating Controls

Mitigating Controls (NIST 800-53 r5) AI

SI-2 Flaw Remediation good match
prevent

Directly requires timely patching of the deserialization flaw in the Post Grid and Gutenberg Blocks plugin versions <=2.3.11 to eliminate the object injection vulnerability.

SI-10 Information Input Validation good match
prevent

Mandates validation of untrusted data inputs prior to deserialization, preventing exploitation of the CWE-502 object injection in the plugin.

RA-5 Vulnerability Monitoring and Scanning good match
detect

Requires regular vulnerability scanning to identify systems affected by CVE-2025-54007 in the vulnerable plugin versions.

References