Cyber Resilience

CVE-2026-22474

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 0.0039 30.7th percentile
Risk Priority 70 floored blend · peak EPSS

Summary

CVE-2026-22474 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 30.7th 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-2026-22474 is a Deserialization of Untrusted Data vulnerability (CWE-502) in the ThemeREX Equestrian Centre WordPress theme, which allows Object Injection. This issue affects Equestrian Centre versions from n/a through 1.5 and was published on 2026-03-05.

The vulnerability has 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 can be exploited remotely over the network by unauthenticated attackers with low complexity and no user interaction required. Successful exploitation enables high-impact compromise of confidentiality, integrity, and availability, potentially leading to arbitrary code execution or other severe effects via object injection.

Mitigation details are available in the Patchstack advisory at https://patchstack.com/database/Wordpress/Theme/equestrian-centre/vulnerability/wordpress-equestrian-centre-theme-1-5-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 Equestrian Centre equestrian-centre allows Object Injection.This issue affects Equestrian Centre: from n/a through <= 1.5.

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 deserialization/object injection in public-facing WordPress theme directly enables exploitation of a public-facing application for RCE.

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

Directly remediates the deserialization of untrusted data vulnerability by identifying, patching, and verifying fixes for the affected Equestrian Centre WordPress theme.

SI-10 Information Input Validation good match
prevent

Validates information inputs to block untrusted serialized data from being deserialized, preventing object injection exploits.

RA-5 Vulnerability Monitoring and Scanning good match
detectrespond

Scans for and identifies the CVE-2026-22474 vulnerability in WordPress themes, enabling timely remediation.

References