CVE-2026-27376
Published: 05 March 2026
Summary
CVE-2026-27376 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 Exploit Public-Facing Application (T1190); ranked at the 11.8th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
Threat & Defense at a Glance
Threat & Defense Details
Likely Mitigating ControlsAI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Penetration testing submits XSS payloads to web applications, detecting cross-site scripting flaws for subsequent remediation.
Validates web inputs to reject script-related content that could produce XSS.
Output validation against expected content can reject or sanitize script content in generated web pages, reducing XSS exploitability.
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Reflected XSS in public-facing WordPress theme directly enables T1190 (exploiting the vulnerable web app via crafted input), T1059.007 (arbitrary JavaScript execution in browser), T1185 (browser session hijacking via script context), and T1539 (stealing web session cookies).
NVD Description
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in JanStudio Claue - Clean, Minimal Elementor WooCommerce Theme claue allows Reflected XSS.This issue affects Claue - Clean, Minimal Elementor WooCommerce Theme: from n/a through <= 2.2.7.
Deeper analysisAI
CVE-2026-27376 is an improper neutralization of input during web page generation vulnerability, enabling reflected cross-site scripting (XSS) as classified under CWE-79. It affects the JanStudio Claue - Clean, Minimal Elementor WooCommerce Theme for WordPress, impacting all versions from n/a through 2.2.7 inclusive. The issue was published on 2026-03-05 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).
Remote attackers can exploit this vulnerability without requiring privileges, over the network with low attack complexity, though it demands user interaction such as visiting a maliciously crafted link or page. Successful exploitation allows injection and execution of arbitrary scripts in the victim's browser context, resulting in low impacts to confidentiality, integrity, and availability, with a changed scope that extends effects beyond the vulnerable component.
The Patchstack advisory at https://patchstack.com/database/Wordpress/Theme/claue/vulnerability/wordpress-claue-clean-minimal-elementor-woocommerce-theme-theme-2-2-7-reflected-cross-site-scripting-xss-vulnerability?_s_id=cve details the vulnerability in Claue theme version 2.2.7 and preceding releases, recommending mitigation through updating to a patched version of the theme beyond 2.2.7.
Details
- CWE(s)