CVE-2022-45276 is a critical security vulnerability identified in the /index/user/user_edit.html component of YJCMS version 1.0.9. This vulnerability allows unauthenticated attackers to directly obtain the Administrator account password. The vulnerability is classified under CWE-425, which relates to direct request handling issues that can lead to unauthorized access. The vulnerability is remotely exploitable over the network without requiring any authentication or user interaction, as indicated by the CVSS vector (AV:N/AC:L/PR:N/UI:N). The impact on confidentiality, integrity, and availability is high, as an attacker gaining administrator credentials can fully compromise the affected system, alter data, disrupt services, and potentially pivot to other internal resources. The vulnerability is present in a web-based content management system (CMS) component, specifically in the user editing interface, which suggests improper access control or exposure of sensitive information through the web application. Although no patches or vendor information are provided, the severity score of 9.8 (critical) reflects the ease of exploitation and the severe consequences of a successful attack. There are no known exploits in the wild at the time of reporting, but the nature of the vulnerability and the lack of authentication requirements make it a high-risk target for attackers. The vulnerability was published on November 23, 2022, and is enriched by CISA, indicating recognition by cybersecurity authorities.

For European organizations using YJCMS v1.0.9, this vulnerability poses a significant risk. An attacker can gain full administrative access without authentication, leading to complete system compromise. This can result in unauthorized data disclosure, including sensitive personal data protected under GDPR, data manipulation, service disruption, and potential lateral movement within the network. Organizations relying on YJCMS for website or content management may face reputational damage, regulatory penalties, and operational downtime. Given the critical nature of the vulnerability, attackers could exploit it to implant malware, deface websites, or exfiltrate confidential information. The impact is especially severe for sectors with high-value data such as finance, healthcare, government, and critical infrastructure. The lack of authentication and user interaction requirements lowers the barrier for exploitation, increasing the likelihood of attacks. Additionally, the vulnerability could be leveraged in supply chain attacks if YJCMS is used by service providers or third parties supporting European enterprises.

1. Immediate mitigation should include isolating or disabling the vulnerable /index/user/user_edit.html component until a patch or update is available. 2. Implement strict access controls and web application firewalls (WAF) rules to restrict access to administrative interfaces, ideally limiting access by IP address or VPN. 3. Conduct thorough audits of user accounts and reset administrator passwords to prevent unauthorized access. 4. Monitor web server logs for suspicious access patterns targeting the user_edit.html page or attempts to retrieve administrator credentials. 5. If possible, upgrade to a newer, patched version of YJCMS or apply vendor-provided patches once available. 6. Employ multi-factor authentication (MFA) for all administrative accounts to reduce the risk of credential misuse. 7. Use network segmentation to limit the exposure of CMS servers to the internet. 8. Educate IT and security teams about this vulnerability to ensure rapid detection and response. 9. Consider deploying runtime application self-protection (RASP) tools to detect and block exploitation attempts in real-time. 10. Engage with vendors or open-source communities to track updates and share threat intelligence related to YJCMS.