Cyber Resilience

CVE-2026-23971

HighRCE

Published: 25 March 2026

Published
25 March 2026
Modified
24 April 2026
KEV Added
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Patch
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CVSS Score v3.1 8.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.0031 22.3th percentile
Risk Priority 55 floored blend · peak EPSS

Summary

CVE-2026-23971 is a high-severity Deserialization of Untrusted Data (CWE-502) vulnerability. Its CVSS base score is 8.1 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 22.3th 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 SI-10 (Information Input Validation) and SI-2 (Flaw Remediation).

Deeper analysis

CVE-2026-23971 is a Deserialization of Untrusted Data vulnerability (CWE-502) in the WoodMart WordPress theme developed by xtemos, enabling Object Injection. This issue affects WoodMart versions from n/a through 8.3.8 and was published on 2026-03-25.

The vulnerability carries a CVSS v3.1 base score of 8.1 (AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H), indicating that unauthenticated remote attackers can exploit it over the network. Exploitation requires high attack complexity but no user interaction or privileges, potentially resulting in high impacts to confidentiality, integrity, and availability through object injection.

Patchstack documents this PHP Object Injection vulnerability in the WoodMart theme version 8.3.8, with details available at https://patchstack.com/database/Wordpress/Theme/woodmart/vulnerability/wordpress-woodmart-theme-8-3-8-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 xtemos WoodMart woodmart allows Object Injection.This issue affects WoodMart: from n/a through <= 8.3.8.

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?

PHP object injection via deserialization in a public-facing WordPress theme directly enables remote unauthenticated exploitation of the application.

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

CVEs Like This One

CVE-2025-62368Shared CWE-502
CVE-2025-68903Shared CWE-502
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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 in WoodMart theme versions through <=8.3.8 by requiring timely application of vendor patches.

SI-10 Information Input Validation good match
prevent

Prevents object injection exploitation by enforcing validation and sanitization of untrusted input data before deserialization in the WoodMart theme.

RA-5 Vulnerability Monitoring and Scanning partial match
detect

Identifies systems affected by CVE-2026-23971 through vulnerability scanning of WordPress themes, enabling targeted remediation.

References