CVE-2025-58846 is a high-severity Cross-Site Request Forgery (CSRF) vulnerability identified in the WordPress plugin 'WordPress Buffer – HYPESocial. Social Media Auto Post, Social Media Auto Publish and Schedule,' developed by Dejan Markovic. This plugin facilitates automated posting and scheduling of social media content directly from WordPress sites. The vulnerability allows an attacker to craft malicious requests that, when executed by an authenticated user, can perform unauthorized actions on their behalf without their consent. The CVSS 3.1 base score of 7.1 reflects the significant risk posed by this vulnerability, with an attack vector of network (AV:N), low attack complexity (AC:L), no privileges required (PR:N), but requiring user interaction (UI:R). The scope is changed (S:C), indicating that exploitation can affect resources beyond the vulnerable component. The impact affects confidentiality, integrity, and availability at a low to moderate level (C:L/I:L/A:L). Additionally, the vulnerability is linked to CWE-352, which specifically denotes CSRF issues. The description also mentions the presence of reflected Cross-Site Scripting (XSS), which may compound the risk by enabling more complex attack chains, such as session hijacking or further exploitation. The affected versions include all versions up to 2020.1.0, with no patch links currently available, and no known exploits in the wild as of the publication date (September 5, 2025). This vulnerability is particularly concerning because WordPress plugins are widely used, and automated social media posting plugins often have elevated privileges to post content, potentially allowing attackers to manipulate social media accounts or inject malicious content. The lack of required privileges for exploitation means any visitor can attempt the attack, but user interaction is necessary, typically requiring the victim to visit a malicious site or click a crafted link.

For European organizations, this vulnerability poses a significant risk, especially for businesses and entities relying on WordPress for their web presence and using the affected plugin to manage social media outreach. Exploitation could lead to unauthorized posting on social media channels, damaging brand reputation, spreading misinformation, or distributing malicious content to followers. The reflected XSS component could also be leveraged to steal session cookies or credentials, leading to further compromise. Confidentiality of user data may be impacted if attackers gain access to sensitive information through session hijacking. Integrity is at risk due to unauthorized content posting or modification, and availability could be affected if attackers disrupt automated posting workflows or cause plugin malfunction. Given the widespread use of WordPress in Europe and the importance of social media for marketing and communication, the vulnerability could affect a broad range of sectors including e-commerce, media, public institutions, and SMEs. The absence of known exploits in the wild currently reduces immediate risk but does not eliminate the threat, as attackers may develop exploits following public disclosure.

European organizations should immediately audit their WordPress installations to identify the presence of the 'WordPress Buffer – HYPESocial' plugin, especially versions up to 2020.1.0. Since no official patches are currently available, organizations should consider the following specific mitigations: 1) Disable or uninstall the affected plugin until a security update is released. 2) Implement Web Application Firewall (WAF) rules that detect and block CSRF attack patterns targeting the plugin's endpoints. 3) Enforce strict Content Security Policy (CSP) headers to mitigate reflected XSS exploitation. 4) Educate users and administrators about the risks of clicking on unsolicited links or visiting untrusted websites while authenticated to WordPress admin interfaces. 5) Monitor logs for unusual POST requests or unauthorized social media posts originating from the WordPress site. 6) Restrict administrative access to WordPress backend via IP whitelisting or VPN to reduce exposure. 7) Regularly back up website data and social media account credentials to enable rapid recovery if compromise occurs. 8) Follow vendor channels closely for patch releases and apply updates promptly once available.