CVE-2026-1062 identifies a Server-Side Request Forgery (SSRF) vulnerability in xiweicheng TMS, a software product used for task management and workflow automation. The vulnerability resides in the Summary function of the HtmlUtil.java source file, where the 'url' parameter is insufficiently sanitized before being used to initiate HTTP requests. This flaw allows an unauthenticated remote attacker to manipulate the 'url' argument, causing the server to send arbitrary HTTP requests to internal or external systems. SSRF vulnerabilities can be leveraged to bypass firewall restrictions, access internal services not exposed externally, or perform further attacks such as port scanning and data exfiltration. The CVSS 4.0 base score of 5.3 reflects a medium severity, considering the attack vector is network-based with low complexity and no required privileges or user interaction, but with limited impact on confidentiality, integrity, and availability. The vulnerability affects all versions of xiweicheng TMS from 2.0 through 2.28.0. Although no active exploitation has been reported, the availability of proof-of-concept exploits increases the risk of future attacks. The lack of official patches at the time of publication necessitates immediate mitigation efforts by affected organizations.

For European organizations, this SSRF vulnerability poses risks primarily related to unauthorized internal network access and potential data leakage. Attackers exploiting this flaw could pivot from the vulnerable TMS server to internal systems, including databases, intranet services, or cloud metadata endpoints, which may contain sensitive information. This could lead to exposure of confidential business data or credentials, impacting confidentiality. Integrity and availability impacts are limited but possible if attackers use SSRF to trigger denial-of-service conditions or manipulate internal services. Organizations in sectors such as finance, manufacturing, and critical infrastructure using xiweicheng TMS are particularly vulnerable due to the sensitivity of their internal networks. The medium severity score suggests that while the threat is not immediately critical, it should be addressed promptly to prevent escalation. The lack of authentication requirements and remote exploitability increase the urgency for European entities to assess exposure and implement mitigations.

European organizations should implement the following specific mitigations: 1) Apply strict input validation and sanitization on the 'url' parameter within the TMS application to restrict requests to trusted domains or IP ranges. 2) Employ network segmentation and firewall rules to limit the TMS server's ability to initiate outbound requests to only necessary external services, blocking access to internal management interfaces and cloud metadata endpoints. 3) Monitor and log outbound HTTP requests from the TMS server to detect anomalous or unauthorized access attempts. 4) If patches become available from xiweicheng, prioritize timely deployment. 5) Use web application firewalls (WAFs) with custom rules to detect and block SSRF attack patterns targeting the vulnerable function. 6) Conduct internal security assessments and penetration testing focusing on SSRF vectors in the TMS environment. 7) Educate IT and security teams about SSRF risks and response procedures. These targeted actions go beyond generic advice by focusing on the specific vulnerable function and the operational context of xiweicheng TMS deployments.