CVE-2026-27087
Published: 25 March 2026
Summary
CVE-2026-27087 is a high-severity Cross-site Scripting (CWE-79) vulnerability. Its CVSS base score is 7.1 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Drive-by Compromise (T1189); ranked at the 11.8th 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-10 (Information Input Validation) and SI-15 (Information Output Filtering).
Threat & Defense at a Glance
Threat & Defense Details
Mitigating Controls (NIST 800-53 r5)AI
Information output filtering directly neutralizes untrusted input reflected in web pages, preventing script injection in reflected XSS attacks like this CVE.
Information input validation rejects or sanitizes malicious payloads before they are processed and reflected by the Wolverine Framework, blocking XSS exploitation.
Flaw remediation requires identifying and patching the specific improper neutralization flaw in Wolverine Framework versions <=1.9 to eliminate the XSS vulnerability.
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Reflected XSS enables client-side JavaScript execution via malicious links (drive-by or user-executed), facilitating session cookie theft.
NVD Description
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in G5Theme Wolverine Framework wolverine-framework allows Reflected XSS.This issue affects Wolverine Framework: from n/a through <= 1.9.
Deeper analysisAI
CVE-2026-27087 is an Improper Neutralization of Input During Web Page Generation vulnerability, classified as Reflected Cross-site Scripting (XSS) under CWE-79, affecting the G5Theme Wolverine Framework WordPress plugin (wolverine-framework). The issue impacts all versions from n/a through 1.9, as published on 2026-03-25.
With a CVSS v3.1 base score of 7.1 (AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L), the vulnerability is exploitable over the network by unauthenticated attackers requiring low complexity and user interaction, such as clicking a malicious link. Successful exploitation enables script injection in the victim's browser context with changed scope, resulting in low impacts to confidentiality, integrity, and availability, typically allowing theft of session data or minor site manipulation.
The Patchstack advisory at https://patchstack.com/database/Wordpress/Plugin/wolverine-framework/vulnerability/wordpress-wolverine-framework-plugin-1-9-reflected-cross-site-scripting-xss-vulnerability?_s_id=cve details the Reflected XSS in Wolverine Framework plugin version 1.9, providing vulnerability assessment and mitigation recommendations for affected WordPress installations.
Details
- CWE(s)