Cyber Resilience

CVE-2026-28130

High

Published: 05 March 2026

Published
05 March 2026
Modified
22 April 2026
KEV Added
—
Patch
—
CVSS Score v3.1 7.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L
EPSS Score 0.0004 14.4th percentile
Risk Priority 14 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2026-28130 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 14.4th 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).

Deeper analysis

CVE-2026-28130 is an Improper Neutralization of Input During Web Page Generation vulnerability, classified as a Reflected Cross-site Scripting (XSS) issue under CWE-79. It affects the AndonDesign UDesign (u-design) WordPress theme, impacting all versions from an unspecified starting point through 4.14.0 inclusive. Published on 2026-03-05, the vulnerability carries 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), reflecting its high severity due to network accessibility and scope change.

Unauthenticated attackers with network access can exploit this vulnerability through low-complexity attacks that require user interaction, such as tricking victims into visiting a maliciously crafted URL. Upon reflection of the unsanitized input in the generated web page, attackers can execute arbitrary JavaScript in the victim's browser context. This enables potential low-level impacts on confidentiality, integrity, and availability, with the exploit's scope changing to cross-origin effects.

The Patchstack advisory at https://patchstack.com/database/Wordpress/Theme/u-design/vulnerability/wordpress-udesign-theme-4-14-0-reflected-cross-site-scripting-xss-vulnerability?_s_id=cve documents this Reflected XSS vulnerability specifically in the WordPress UDesign theme version 4.14.0, providing details relevant to mitigation for affected deployments.

EU & UK References

Vulnerability details

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in AndonDesign UDesign u-design allows Reflected XSS.This issue affects UDesign: from n/a through <= 4.14.0.

CWE(s)
CWE-79

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 →
T1059.007 JavaScript Execution
Adversaries may abuse various implementations of JavaScript for execution.
attack.mitre.org →
Why these techniques?

Reflected XSS in public-facing WordPress theme directly enables exploitation of Internet-facing apps (T1190) via malicious URL and subsequent arbitrary JavaScript execution in victim browser (T1059.007).

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

CVEs Like This One

CVE-2026-3231Shared CWE-79
CVE-2025-23481Shared CWE-79
CVE-2025-69302Shared CWE-79
CVE-2025-23734Shared CWE-79
CVE-2025-23571Shared CWE-79
CVE-2025-65110Shared CWE-79
CVE-2026-24948Shared CWE-79
CVE-2025-27352Shared CWE-79
CVE-2025-30349Shared CWE-79
CVE-2026-3876Shared CWE-79

Affected Assets

Mitigating Controls

Mitigating Controls (NIST 800-53 r5) AI

SI-10 Information Input Validation good match
prevent

Directly requires validation and neutralization of untrusted input before it is reflected into web page output, blocking the exact CWE-79 flaw in UDesign.

SI-15 Information Output Filtering good match
prevent

Mandates filtering or encoding of information sent to users, preventing reflected script execution from malicious URLs crafted against the theme.

AC-4 Information Flow Enforcement partial match
prevent

Enforces information flow rules that can restrict untrusted data from being inserted into HTTP responses without sanitization.

References