CVE-2026-28141 is an unauthenticated cross-site scripting (XSS) vulnerability in the NextGEN Gallery plugin for WordPress, affecting versions up to 4.2.3. The vulnerability arises from improper neutralization of input during web page generation (CWE-79), allowing attackers to inject malicious scripts that execute in the context of the victim's browser. The CVSS v3.1 base score is 7.1, indicating high severity with network attack vector, low attack complexity, no privileges required, user interaction required, and impacts on confidentiality, integrity, and availability at low levels. There is no vendor advisory or patch information available at this time.

Successful exploitation of this vulnerability could allow an unauthenticated attacker to execute arbitrary scripts in the context of users visiting the affected NextGEN Gallery pages. This could lead to limited disclosure of information, modification of data, or disruption of service. The vulnerability affects confidentiality, integrity, and availability at low levels but requires user interaction.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, consider applying temporary mitigations such as disabling or restricting access to the vulnerable NextGEN Gallery plugin or using web application firewall (WAF) rules to block malicious input patterns related to XSS attacks.