CVE-2026-25311 identifies a Missing Authorization vulnerability in the 10up Autoshare for Twitter plugin, specifically affecting versions up to 2.3.1. This plugin automates sharing content from websites to Twitter accounts, commonly used in WordPress environments. The vulnerability stems from incorrectly configured access control mechanisms, which fail to properly restrict certain actions or API endpoints within the plugin. As a result, unauthorized users may exploit these weaknesses to perform actions that should require elevated permissions, such as posting tweets or modifying sharing settings without authentication or proper authorization. The lack of a CVSS score indicates this is a newly published vulnerability, with no known exploits in the wild as of the publication date. However, the nature of the flaw suggests a significant risk because it compromises the integrity and potentially the availability of the social media sharing functionality. Attackers could leverage this to disseminate unauthorized content, damage organizational reputation, or manipulate social media presence. The vulnerability affects all installations of the plugin up to version 2.3.1, regardless of specific configuration, due to the fundamental access control misconfiguration. The issue was reserved and published in early 2026, with no patch links currently available, indicating that organizations must proactively monitor for updates and consider interim mitigations.

For European organizations, the impact of CVE-2026-25311 can be substantial, especially for those relying heavily on social media for marketing, communications, or customer engagement. Unauthorized exploitation could lead to the posting of malicious or misleading content on official Twitter accounts, damaging brand reputation and trust. It could also facilitate social engineering or phishing campaigns by leveraging the organization's legitimate social media presence. Additionally, unauthorized changes to sharing settings might disrupt automated workflows, causing operational inefficiencies. The integrity of social media communications is at risk, and in some cases, availability of the sharing functionality could be impaired if attackers manipulate the plugin's behavior. Given the widespread use of WordPress and social media integration in European enterprises, especially in sectors like retail, media, and public services, this vulnerability presents a vector for reputational harm and potential compliance issues under regulations like GDPR if user data or communications are affected.

Organizations should immediately audit their use of the 10up Autoshare for Twitter plugin and identify affected versions (up to 2.3.1). Until an official patch is released, restrict plugin access to the minimum necessary administrative users and disable or remove the plugin if not critical. Implement strict role-based access controls within WordPress to ensure only trusted users can manage or invoke the plugin's functions. Monitor logs for unusual activity related to the plugin, such as unexpected API calls or unauthorized content postings. Employ web application firewalls (WAFs) with custom rules to detect and block suspicious requests targeting the plugin endpoints. Stay informed through vendor advisories and security bulletins for patch releases and apply updates promptly. Additionally, review Twitter account security, including API keys and tokens associated with the plugin, and rotate credentials if compromise is suspected. Conduct user awareness training to recognize potential phishing or social engineering attempts stemming from unauthorized social media posts.