CVE-2026-1614 identifies a stored cross-site scripting (XSS) vulnerability in the Rise Blocks – A Complete Gutenberg Page Builder plugin for WordPress, versions up to and including 3.7. The vulnerability stems from insufficient input sanitization and output escaping of the ‘logoTag’ attribute within the Site Identity block, allowing malicious scripts to be stored persistently in the website content. Authenticated attackers with Contributor-level permissions or higher can exploit this flaw by injecting arbitrary JavaScript code into pages. Because the injected scripts execute whenever any user accesses the affected page, this can lead to session hijacking, defacement, or redirection to malicious sites. The vulnerability is classified under CWE-79, indicating improper neutralization of input during web page generation. The CVSS 3.1 vector (AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N) reflects a network attack vector with low complexity, requiring privileges but no user interaction, and a scope change due to impact on other users. Although no known exploits are currently reported, the vulnerability poses a significant risk to WordPress sites using this plugin, especially those allowing multiple contributors. The lack of official patches at the time of reporting necessitates immediate attention to mitigate potential exploitation.

The primary impact of this vulnerability is the potential compromise of site confidentiality and integrity through stored XSS attacks. Attackers can execute arbitrary scripts in the context of the affected website, potentially stealing session cookies, performing actions on behalf of other users, or injecting malicious content. This can lead to unauthorized access, defacement, or distribution of malware to site visitors. Since the vulnerability requires Contributor-level access, it primarily threatens sites with multiple authenticated users or contributors. The scope of the impact extends to all users who visit the injected pages, increasing the risk of widespread compromise. Although availability is not affected, the reputational damage and potential data breaches can be significant. Organizations relying on this plugin for content management and page building are at risk of targeted attacks, especially those with high traffic or sensitive user data.

1. Immediately update the Rise Blocks plugin to a patched version once available from the vendor. 2. Until a patch is released, restrict Contributor-level and higher permissions to trusted users only, minimizing the risk of malicious script injection. 3. Implement a Web Application Firewall (WAF) with rules to detect and block common XSS payloads targeting the ‘logoTag’ attribute or Site Identity block. 4. Conduct regular security audits and code reviews of custom blocks or plugins to ensure proper input sanitization and output escaping. 5. Employ Content Security Policy (CSP) headers to limit the execution of unauthorized scripts on the website. 6. Educate site administrators and contributors about the risks of XSS and safe content practices. 7. Monitor website logs and user activity for suspicious behavior indicative of exploitation attempts. 8. Consider disabling or replacing the vulnerable plugin with alternative page builders that follow secure coding practices if immediate patching is not feasible.