CVE-2025-8779 is a stored cross-site scripting (XSS) vulnerability identified in the All-in-One Addons for Elementor – WidgetKit plugin for WordPress, specifically impacting all versions up to and including 2.5.6. The vulnerability stems from improper neutralization of input during web page generation (CWE-79), where user-supplied attributes in the Team and Countdown widgets are not adequately sanitized or escaped before rendering. This flaw allows an authenticated attacker with contributor-level privileges or higher to inject arbitrary JavaScript code into pages. Because the malicious scripts are stored persistently, they execute in the context of any user who views the affected page, potentially compromising user sessions, stealing cookies, or performing unauthorized actions on behalf of users. The CVSS v3.1 base score is 6.4, reflecting a medium severity level, with an attack vector of network, low attack complexity, requiring privileges (PR:L), no user interaction (UI:N), and scope changed (S:C). The vulnerability does not affect availability but impacts confidentiality and integrity. No patches or official fixes are currently linked, and no known exploits have been reported in the wild. The vulnerability is significant due to the widespread use of WordPress and Elementor, making many websites potentially vulnerable if they use this plugin version. The flaw requires authenticated access, which limits exploitation to insiders or compromised accounts but remains a serious risk in multi-user environments.

The impact of CVE-2025-8779 is primarily on the confidentiality and integrity of affected WordPress sites and their users. Successful exploitation allows attackers to execute arbitrary scripts in the browsers of visitors, which can lead to session hijacking, theft of sensitive information such as cookies or credentials, defacement of website content, or redirection to malicious sites. For organizations, this can result in loss of user trust, reputational damage, and potential regulatory consequences if user data is compromised. Since the vulnerability requires contributor-level access, it poses a significant insider threat or risk from compromised accounts. In multi-author WordPress environments, this risk is amplified. The scope change in the CVSS vector indicates that the vulnerability can affect resources beyond the vulnerable component, potentially impacting the entire website. Although no availability impact is noted, the indirect effects of exploitation, such as site defacement or phishing, can disrupt business operations. The absence of known exploits in the wild suggests limited current exploitation but does not preclude future attacks, especially as proof-of-concept code may emerge. Organizations worldwide using this plugin should consider the threat serious enough to warrant immediate mitigation.

To mitigate CVE-2025-8779, organizations should first verify if they are using the All-in-One Addons for Elementor – WidgetKit plugin, particularly versions up to 2.5.6. If an official patch or update becomes available, immediate application is critical. In the absence of a patch, administrators should restrict contributor-level permissions to trusted users only, minimizing the risk of malicious script injection. Implementing a Web Application Firewall (WAF) with rules to detect and block common XSS payloads can provide an additional layer of defense. Regularly audit user-generated content, especially in the Team and Countdown widgets, for suspicious scripts or anomalies. Employ Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts on the website. Additionally, monitoring logs for unusual activity or changes in widget content can help detect exploitation attempts early. Educate contributors about secure content practices and the risks of injecting untrusted code. Finally, consider disabling or replacing the vulnerable plugin with alternatives that follow secure coding practices until a secure version is released.