CVE-2026-28073
Published: 19 March 2026
Summary
CVE-2026-28073 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
SI-15 directly prevents reflected XSS by filtering and encoding information prior to output on web pages, addressing the improper neutralization during web page generation in WP eMember.
SI-10 enforces validation of user inputs to block malicious scripts from being accepted and reflected in WP eMember plugin responses.
SI-2 ensures timely identification, reporting, and remediation of flaws like CVE-2026-28073 through patching WP eMember beyond version 10.2.2.
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Reflected XSS enables arbitrary JS execution in victim browsers via crafted malicious links (often delivered socially), directly facilitating Drive-by Compromise, User Execution: Malicious Link, and JavaScript interpreter abuse.
NVD Description
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Tips and Tricks HQ WP eMember wp-eMember allows Reflected XSS.This issue affects WP eMember: from n/a through <= v10.2.2.
Deeper analysisAI
CVE-2026-28073 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 WP eMember WordPress plugin from Tips and Tricks HQ, with the issue present in versions from n/a through 10.2.2.
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), indicating exploitation is possible over the network with low attack complexity, no privileges required, but user interaction is needed. Remote attackers can exploit it by tricking authenticated or unauthenticated users into interacting with malicious input, such as a crafted link or payload reflected in web page generation. Successful attacks enable limited impacts on confidentiality, integrity, and availability within a changed scope.
The Patchstack advisory (https://patchstack.com/database/Wordpress/Plugin/wp-eMember/vulnerability/wordpress-wp-emember-theme-v10-2-2-reflected-cross-site-scripting-xss-vulnerability?_s_id=cve) documents this Reflected XSS in WP eMember up to version 10.2.2, providing details for security practitioners to assess and address the issue.
Details
- CWE(s)