CVE-2025-46447 is a DOM-based Cross-Site Scripting (XSS) vulnerability classified under CWE-79, affecting the WPFable Fable Extra product up to version 1.0.6. This vulnerability arises due to improper neutralization of input during web page generation, allowing malicious scripts to be injected and executed in the context of a user's browser. Specifically, the flaw exists in the way Fable Extra processes and renders input data on web pages, failing to adequately sanitize or encode user-supplied content before incorporating it into the Document Object Model (DOM). As a result, an attacker can craft specially crafted URLs or input that, when processed by the vulnerable application, execute arbitrary JavaScript code in the victim's browser. This can lead to session hijacking, credential theft, unauthorized actions on behalf of the user, or redirection to malicious sites. The vulnerability is DOM-based, meaning the attack payload is executed as a result of client-side script processing rather than server-side response manipulation. No known exploits have been reported in the wild as of the publication date (April 24, 2025), and no patches have been released yet. The vulnerability affects all versions up to 1.0.6, with no indication of fixed versions. The issue was identified and reserved by Patchstack and enriched by CISA, indicating recognition by authoritative cybersecurity entities. Given the nature of the vulnerability, exploitation requires that a user interacts with a maliciously crafted link or input, but no authentication is required to trigger the vulnerability. The attack surface includes any web-facing deployments of WPFable Fable Extra that process user input and render it dynamically on web pages.

For European organizations using WPFable Fable Extra, this vulnerability poses a significant risk to the confidentiality and integrity of user data and sessions. Successful exploitation could allow attackers to steal sensitive information such as authentication tokens, personal data, or corporate credentials, potentially leading to unauthorized access to internal systems or data breaches. Additionally, attackers could perform actions on behalf of users, causing operational disruptions or reputational damage. The availability impact is limited but could arise indirectly if attackers leverage the vulnerability to deploy further attacks like malware or ransomware. Given the medium severity rating and the requirement for user interaction, the threat is moderate but should not be underestimated, especially for organizations in sectors with high regulatory scrutiny such as finance, healthcare, and government. The lack of a patch increases exposure time, and the absence of known exploits does not preclude future active exploitation. Organizations relying on this product for web applications or portals accessible to employees or customers are particularly at risk.

1. Immediate mitigation should include implementing strict Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts and reduce the impact of potential XSS payloads. 2. Employ input validation and output encoding at the application level, ensuring all user-supplied data is properly sanitized before being inserted into the DOM. 3. Use web application firewalls (WAFs) with rules tuned to detect and block common XSS attack patterns targeting the Fable Extra application. 4. Educate users and administrators about the risks of clicking on untrusted links or inputs, emphasizing cautious behavior with URLs and input fields. 5. Monitor web server and application logs for unusual or suspicious requests that may indicate attempted exploitation. 6. Engage with the vendor (WPFable) to obtain timelines for patches or updates and prioritize patching once available. 7. If feasible, isolate or restrict access to the vulnerable application components until a fix is applied. 8. Conduct regular security assessments and penetration testing focused on client-side vulnerabilities to detect similar issues proactively.