Attack Vectors

CVE-2026-25452 is a High-severity vulnerability (CVSS 7.2, vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N) affecting the WordPress plugin Remoji – Post/Comment Reaction and Enhancement (slug: remoji) in versions up to and including 2.2.

Because this is an unauthenticated Stored Cross-Site Scripting (XSS) issue, an attacker does not need a login to inject malicious script content. Once injected, the script can execute automatically when a visitor (including staff) loads the affected page. This broadens risk to any organization relying on WordPress pages where plugin-driven content is displayed to users.

Reference: CVE record and Wordfence advisory.

Security Weakness

The weakness is caused by insufficient input sanitization and output escaping in Remoji – Post/Comment Reaction and Enhancement (≤ 2.2). In practical terms, the plugin may accept attacker-supplied content and later display it to users without reliably removing or neutralizing script code.

Stored XSS is especially concerning for business leaders because it can turn normal web pages into delivery points for malicious activity without obvious changes to site content. Even if the initial injection is small, the impact can extend across your brand’s web presence wherever that injected content is rendered.

At the time of this advisory, there is no known patch available. This elevates risk because “update and move on” is not currently an option, and compensating controls (or removal) must be considered based on your organization’s risk tolerance.

Technical or Business Impacts

Brand and customer trust risk: Visitors could be exposed to unwanted pop-ups, redirects, fake surveys, or other deceptive content delivered through your own domain, harming reputation and conversion rates.

Account and data exposure: Depending on who loads an injected page, stored XSS can contribute to theft of session data or other sensitive information accessible through a user’s browser session, potentially impacting staff accounts, site administrators, or customer interactions.

Compliance and legal exposure: If malicious scripts lead to unauthorized access, tracking, or data leakage, your organization may face incident response obligations, reporting requirements, and contractual issues—especially if marketing pages handle user submissions, tracking pixels, or authenticated portals.

Operational disruption: Marketing teams may need to pause campaigns or take key landing pages offline while investigating and cleaning up injected content, leading to lost pipeline and unplanned spend.

Recommended mitigation (given no patch): Consider uninstalling Remoji – Post/Comment Reaction and Enhancement and replacing it with an alternative supported plugin. If immediate removal is not feasible, reduce exposure by limiting where plugin functionality is used, increasing monitoring for unexpected page changes, and implementing protective controls (such as a reputable Web Application Firewall) while you plan a controlled replacement.

Similar Attacks

Stored XSS has been used in high-profile, real-world incidents to spread malicious content through trusted websites and user profiles. Examples include:

The “Samy” MySpace worm (stored XSS used to self-propagate through user profiles)
The 2010 Twitter “onMouseOver” worm (XSS-driven spread affecting user sessions and timelines)