CVE-2025-26552

CVE-2025-26552 is an Improper Neutralization of Input During Web Page Generation vulnerability, classified as Stored Cross-Site Scripting (CWE-79), in the Naver Syndication V2 WordPress plugin (badr-naver-syndication) developed by badrHan. This issue affects all versions of the plugin up to and including 0.8.3. The vulnerability has 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 high severity due to network accessibility, low attack complexity, no required privileges, user interaction, and scope change with low impacts on confidentiality, integrity, and availability.

An unauthenticated attacker can exploit this vulnerability over the network by tricking a site user, typically an administrator, into performing an action that injects a malicious script via Cross-Site Request Forgery (CSRF) leading to stored XSS. Once stored, the payload executes in the browser context of subsequent users viewing the affected page, enabling potential theft of session cookies, account takeover, or further site compromise within the victim's privileges.

The Patchstack advisory (https://patchstack.com/database/Wordpress/Plugin/badr-naver-syndication/vulnerability/wordpress-naver-syndication-v2-plugin-0-8-3-csrf-to-stored-cross-site-scripting-vulnerability?_s_id=cve) documents the CSRF-to-Stored XSS issue in Naver Syndication V2 version 0.8.3. Mitigation involves updating the plugin to a version beyond 0.8.3, where the vulnerability is no longer present, and applying general WordPress best practices such as disabling unused plugins and enabling content security policies.