CVE-2024-24932 is a reflected Cross-site Scripting (XSS) vulnerability identified in the Djo VK Poster Group software, affecting versions up to 2.0.3. This vulnerability arises due to improper neutralization of user-supplied input during web page generation, classified under CWE-79. Specifically, the application fails to adequately sanitize or encode input before reflecting it back in the HTTP response, allowing an attacker to inject malicious scripts. When a victim accesses a crafted URL containing malicious payloads, the injected script executes in the victim's browser context. This can lead to session hijacking, credential theft, unauthorized actions on behalf of the user, or redirection to malicious sites. The vulnerability is reflected, meaning the malicious input is not stored persistently but is immediately echoed back in the response. No authentication is required to exploit this issue, and exploitation does not require user interaction beyond visiting a maliciously crafted link. There are no known public exploits in the wild at the time of reporting, and no patches have been published yet. The vulnerability was reserved and published in early 2024, with technical details enriched by CISA and Patchstack. The affected product, VK Poster Group by Djo, is a tool likely used for managing or automating posts on VK, a popular social media platform, which suggests a web-facing application with user interaction capabilities.

For European organizations using VK Poster Group, this vulnerability poses a moderate risk primarily to confidentiality and integrity. Attackers could exploit the reflected XSS to steal session cookies, enabling unauthorized access to user accounts or administrative interfaces. This could lead to unauthorized posting, data leakage, or manipulation of social media content, potentially damaging brand reputation or exposing sensitive information. The availability impact is limited, as XSS generally does not cause service disruption. However, successful exploitation could facilitate further attacks such as phishing or malware distribution targeting employees or customers. Given the social media context, organizations relying on VK Poster Group for marketing or communications could face operational disruptions or reputational harm. The lack of authentication requirement and ease of exploitation increase the threat level, especially for organizations with employees or users who might be targeted via phishing campaigns containing malicious links. The absence of known exploits reduces immediate risk but does not eliminate the threat, as attackers often develop exploits rapidly after disclosure.

1. Immediate implementation of input validation and output encoding: Developers should ensure all user-supplied input is properly sanitized and encoded before being reflected in web pages, using context-appropriate escaping mechanisms (e.g., HTML entity encoding). 2. Employ Content Security Policy (CSP): Organizations should configure strict CSP headers to restrict the execution of unauthorized scripts and reduce the impact of XSS attacks. 3. User awareness and training: Educate users to recognize suspicious links and avoid clicking on untrusted URLs, especially those purporting to be related to VK Poster Group activities. 4. Monitor and log web application traffic for unusual patterns indicative of XSS exploitation attempts. 5. Segmentation and least privilege: Limit the privileges of accounts used with VK Poster Group to minimize potential damage from compromised sessions. 6. Patch management: Stay alert for official patches or updates from Djo and apply them promptly once available. 7. Consider deploying Web Application Firewalls (WAFs) with rules tuned to detect and block reflected XSS payloads targeting VK Poster Group endpoints. 8. Review and harden the VK Poster Group configuration to disable any unnecessary features that may increase attack surface.