CVE-2025-10131 is a stored cross-site scripting (XSS) vulnerability identified in the 'All Social Share Options' WordPress plugin developed by codiblog. This vulnerability exists in all versions up to and including 1.0 due to insufficient input sanitization and output escaping of user-supplied attributes within the plugin's 'sc' shortcode functionality. Specifically, authenticated users with contributor-level access or higher can inject arbitrary JavaScript code into pages by manipulating shortcode attributes. Because the injected scripts are stored persistently, they execute every time any user accesses the affected page, potentially compromising user sessions, stealing cookies, or performing unauthorized actions on behalf of users. The vulnerability leverages CWE-79, which pertains to improper neutralization of input during web page generation. The CVSS 3.1 base score is 6.4, reflecting a medium severity with network attack vector (AV:N), low attack complexity (AC:L), requiring privileges (PR:L), no user interaction (UI:N), and a scope change (S:C) affecting confidentiality and integrity but not availability. No patches or exploits are currently publicly available, but the vulnerability poses a significant risk to WordPress sites using this plugin, especially those with multiple contributors. The flaw highlights the importance of rigorous input validation and output encoding in plugin development to prevent XSS attacks.

The impact of CVE-2025-10131 is primarily on the confidentiality and integrity of affected WordPress sites and their users. Successful exploitation allows an attacker with contributor-level access to inject persistent malicious scripts that execute in the browsers of any user visiting the compromised pages. This can lead to session hijacking, theft of authentication tokens, unauthorized actions performed on behalf of users, defacement, or distribution of malware. Since contributors typically have limited privileges, the vulnerability lowers the barrier for attackers to escalate their influence within the site. The scope change in the CVSS vector indicates that the vulnerability can affect resources beyond the attacker's privileges, potentially impacting administrators or other users. While availability is not directly affected, the reputational damage and potential data breaches can have severe consequences for organizations. Given WordPress's widespread use globally, especially among small to medium businesses and content creators, the vulnerability could be leveraged in targeted attacks or automated campaigns if exploited at scale.

To mitigate CVE-2025-10131, organizations should take the following specific actions: 1) Immediately update the 'All Social Share Options' plugin once a patch is released by codiblog; monitor vendor announcements closely. 2) Until a patch is available, restrict contributor-level access and above to trusted users only, minimizing the risk of malicious shortcode injection. 3) Implement web application firewall (WAF) rules to detect and block suspicious shortcode attribute patterns or script injections targeting the 'sc' shortcode. 4) Conduct regular security audits and code reviews of installed plugins to identify similar input validation weaknesses. 5) Employ Content Security Policy (CSP) headers to limit the execution of unauthorized scripts on the site. 6) Educate site administrators and contributors about the risks of injecting untrusted content and enforce strict content submission guidelines. 7) Monitor site logs and user activity for unusual behavior indicative of exploitation attempts. 8) Consider disabling or replacing the vulnerable plugin with alternative social sharing solutions that follow secure coding practices.