Cyber Resilience

CVE-2025-49890

CriticalRCE

Published: 20 August 2025

Published
20 August 2025
Modified
23 April 2026
KEV Added
—
Patch
—
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 0.0015 35.5th percentile
Risk Priority 20 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2025-49890 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 35.5th 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-2025-49890 is a Deserialization of Untrusted Data vulnerability (CWE-502) in the ThemeREX Organic Beauty WordPress theme, which allows Object Injection. Published on 2025-08-20, this issue affects Organic Beauty versions from n/a through 1.4.6 and 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).

Unauthenticated attackers can exploit this vulnerability remotely over the network with low attack complexity and no user interaction required. Successful exploitation enables high-impact compromise of confidentiality, integrity, and availability, typically through arbitrary object instantiation in PHP that could lead to severe outcomes like remote code execution.

The Patchstack advisory provides details on this WordPress theme vulnerability, including potential mitigation and patch information, accessible at https://patchstack.com/database/Wordpress/Theme/organic-beauty/vulnerability/wordpress-organic-beauty-theme-1-4-6-php-object-injection-vulnerability?_s_id=cve.

EU & UK References

Vulnerability details

Deserialization of Untrusted Data vulnerability in ThemeREX Organic Beauty organic-beauty allows Object Injection.This issue affects Organic Beauty: from n/a through <= 1.4.6.

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?

Direct unauthenticated RCE via PHP object injection on public-facing WordPress application maps cleanly to exploitation of public-facing apps.

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

CVEs Like This One

CVE-2024-13770Shared CWE-502
CVE-2026-27303Shared CWE-502
CVE-2025-53586Shared CWE-502
CVE-2025-64353Shared CWE-502
CVE-2025-31047Shared CWE-502
CVE-2026-27096Shared CWE-502
CVE-2023-49886Shared CWE-502
CVE-2026-23542Shared CWE-502
CVE-2025-66631Shared CWE-502
CVE-2026-40044Shared CWE-502

Affected Assets

Mitigating Controls

Mitigating Controls (NIST 800-53 r5) AI

SI-2 Flaw Remediation good match
prevent

Patching the deserialization flaw in Organic Beauty theme versions <=1.4.6 directly prevents object injection and potential remote code execution.

SI-10 Information Input Validation good match
prevent

Validating untrusted inputs prior to deserialization in the WordPress theme prevents exploitation of CWE-502 object injection vulnerability.

RA-5 Vulnerability Monitoring and Scanning good match
prevent

Vulnerability scanning identifies the deserialization vulnerability in the theme, enabling timely remediation before exploitation.

References