CVE-2026-1588 identifies a path traversal vulnerability in the jishenghua jshERP product, specifically affecting versions 3.0 through 3.6. The vulnerability resides in the install function within the /jshERP-boot/plugin/installByPath file, part of the com.gitee.starblues.integration.operator.DefaultPluginOperator component. The flaw allows an attacker with high privileges to manipulate the 'path' argument, enabling traversal outside the intended directory structure. This can lead to unauthorized reading or potentially writing of files on the server, depending on the implementation context. The vulnerability is remotely exploitable without user interaction but requires the attacker to have elevated privileges on the system, which limits the attack surface to insiders or attackers who have already compromised lower-level access. The CVSS 4.0 score is 5.1 (medium severity), reflecting the moderate impact and exploitation complexity. The vendor was informed early but has not responded or released a patch, and a public exploit exists, increasing the risk of exploitation. The vulnerability could be leveraged to access sensitive configuration files, credentials, or other critical data stored on the server, potentially leading to further compromise or data leakage. No known active exploitation campaigns have been reported to date.

For European organizations, this vulnerability poses a moderate risk primarily to those using jshERP versions 3.0 to 3.6, especially in environments where users have elevated privileges that could be abused. Successful exploitation could lead to unauthorized access to sensitive files, potentially exposing confidential business data or credentials. This could disrupt business operations, cause data breaches, or facilitate lateral movement within networks. Given the ERP system's central role in managing enterprise resources, any compromise could have cascading effects on financial, operational, and compliance aspects. The lack of vendor response and patch increases the window of exposure. Organizations in sectors with strict data protection regulations (e.g., GDPR) face additional legal and reputational risks if sensitive data is exposed. The medium severity suggests that while the vulnerability is not trivially exploitable by external attackers without privileges, insider threats or attackers who have gained initial access could leverage it to escalate privileges or deepen their foothold.

European organizations should immediately audit their jshERP deployments to identify affected versions (3.0 through 3.6). Since no official patch is available, mitigation should focus on restricting access to the vulnerable installByPath function and limiting high-privilege user accounts. Implement strict access controls and network segmentation to reduce the risk of privilege escalation. Employ application-layer firewalls or web application firewalls (WAFs) to detect and block path traversal attempts targeting the vulnerable endpoint. Monitor logs for suspicious path manipulation or unauthorized file access attempts. Consider deploying runtime application self-protection (RASP) solutions to detect exploitation attempts in real time. If possible, isolate the ERP system from internet-facing networks and restrict administrative access to trusted internal networks or VPNs. Engage with the vendor for updates and consider alternative ERP solutions if remediation is delayed. Additionally, conduct regular security training for administrators to recognize and prevent misuse of elevated privileges.