Cyber Resilience

CVE-2026-25449

CriticalRCE

Published: 18 March 2026

Published
18 March 2026
Modified
23 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 0.0032 23.8th percentile
Risk Priority 70 floored blend · peak EPSS

Summary

CVE-2026-25449 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 23.8th 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-2 (Flaw Remediation) and RA-5 (Vulnerability Monitoring and Scanning).

Deeper analysis

CVE-2026-25449 is a Deserialization of Untrusted Data vulnerability (CWE-502) in the shinetheme Traveler WordPress theme, which allows Object Injection. This issue affects Traveler versions from n/a through those prior to 3.2.8.1.

The vulnerability 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), making it critically severe. Remote attackers require no privileges or user interaction and can exploit it over the network with low attack complexity, potentially achieving high impacts on confidentiality, integrity, and availability via object injection in PHP.

The Patchstack advisory at https://patchstack.com/database/Wordpress/Theme/traveler/vulnerability/wordpress-traveler-theme-3-2-8-php-object-injection-vulnerability?_s_id=cve details the vulnerability in the WordPress Traveler theme version 3.2.8, with mitigation achieved by updating to version 3.2.8.1 or later.

OWASP Top 10 for Web (2025)

A08:2025 Software or Data Integrity Failures

EU & UK References

Vulnerability details

Deserialization of Untrusted Data vulnerability in shinetheme Traveler traveler allows Object Injection.This issue affects Traveler: from n/a through < 3.2.8.1.

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?

Unauthenticated remote PHP object injection via deserialization in a public-facing WordPress theme directly enables exploitation of public-facing applications.

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 mitigates the deserialization vulnerability by requiring timely patching of the affected Traveler WordPress theme to version 3.2.8.1 or later.

SI-10 Information Input Validation partial match
prevent

Validates untrusted inputs to prevent processing of malicious serialized objects that exploit the object injection flaw.

RA-5 Vulnerability Monitoring and Scanning partial match
detect

Identifies the presence of CVE-2026-25449 through vulnerability scanning of WordPress themes, enabling proactive remediation.

References