CVE-2025-22660 is a DOM-based Cross-site Scripting (XSS) vulnerability affecting the Wolfgang Include Mastodon Feed plugin, versions up to 1.9.9. The vulnerability stems from improper neutralization of input during the generation of web pages, specifically when including Mastodon feeds. DOM-based XSS occurs when client-side scripts write untrusted data to the Document Object Model without proper sanitization, enabling attackers to inject malicious JavaScript code that executes in the victim's browser. This can lead to session hijacking, theft of sensitive information, or redirection to malicious sites. The vulnerability does not require authentication, increasing its risk profile, but does require user interaction, such as visiting a compromised or maliciously crafted page. No patches or fixes are currently linked, and no known exploits have been reported in the wild, but the vulnerability is publicly disclosed and thus could be targeted by attackers. The plugin is commonly used to embed Mastodon social media feeds into websites, which means websites leveraging this plugin expose their visitors to potential attacks. The lack of a CVSS score necessitates an assessment based on impact and exploitability factors. The vulnerability affects the confidentiality and integrity of user data and the availability of trusted web content. Since the plugin is used globally, the scope is broad, especially in regions with high Mastodon and WordPress usage.

The impact of CVE-2025-22660 is significant for organizations that use the Wolfgang Include Mastodon Feed plugin to display Mastodon feeds on their websites. Successful exploitation can lead to the execution of arbitrary JavaScript in the context of the victim's browser, enabling attackers to steal session cookies, credentials, or other sensitive information. This can result in account takeover, unauthorized actions on behalf of users, or distribution of malware. The integrity of the website's content can be compromised, damaging user trust and brand reputation. Additionally, attackers may use the vulnerability to conduct phishing attacks or redirect users to malicious sites. Since the vulnerability is client-side and requires user interaction, the attack vector is typically through social engineering or malicious links. Organizations with high web traffic and user engagement are at greater risk, and the potential for widespread impact exists if exploited at scale. The absence of known exploits in the wild currently limits immediate risk but does not preclude future attacks.

To mitigate CVE-2025-22660, organizations should first monitor for and apply any official patches or updates released by Wolfgang for the Include Mastodon Feed plugin as soon as they become available. In the absence of patches, administrators should consider disabling the plugin or removing the Mastodon feed integration temporarily to eliminate exposure. Implement strict input validation and output encoding on all data that is rendered in the DOM, especially data originating from external sources like social media feeds. Employ Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts and reduce the impact of potential XSS attacks. Regularly audit and review website code and third-party plugins for security weaknesses. Educate users and administrators about the risks of clicking on untrusted links and the importance of maintaining updated software. Additionally, use web application firewalls (WAFs) configured to detect and block XSS attack patterns targeting the affected plugin. Continuous monitoring of web traffic and logs for suspicious activity related to the plugin is also recommended.