CVE-2026-3026 is a server-side request forgery (SSRF) vulnerability identified in erzhongxmu JEEWMS version 3.7, specifically within the UEditor component's JSP file located at /plug-in/ueditor/jsp/getRemoteImage.jsp. The vulnerability stems from insufficient validation of the 'upfile' parameter, which is used to fetch remote images. An attacker can exploit this flaw by crafting a malicious request that forces the server to make unintended HTTP requests to internal or external systems. This SSRF can be triggered remotely without requiring authentication or user interaction, increasing its attack surface. The vulnerability's CVSS 4.0 score is 6.9, reflecting a medium severity level due to its potential to leak internal information, perform unauthorized actions, or cause limited disruption. The vendor was notified but did not respond, and no official patches are available, increasing the urgency for organizations to apply mitigations. While no active exploits have been reported, the public disclosure of the exploit code raises the risk of future attacks. The vulnerability does not affect the confidentiality, integrity, or availability of the system at a critical level but can be leveraged as a foothold for further attacks or reconnaissance within the network environment.

The SSRF vulnerability in JEEWMS 3.7 can allow attackers to coerce the affected server into making arbitrary HTTP requests, potentially accessing internal services that are otherwise inaccessible externally. This can lead to information disclosure of sensitive internal resources, bypassing network segmentation and firewall rules. Attackers might use this to probe internal infrastructure, access metadata services in cloud environments, or exploit other internal vulnerabilities. Although direct system compromise or data destruction is unlikely solely from this SSRF, it can serve as a pivot point for more severe attacks. The lack of authentication and user interaction requirements broadens the scope of potential attackers, including remote unauthenticated adversaries. Organizations relying on JEEWMS 3.7 may face increased risk of reconnaissance, data leakage, and indirect compromise, particularly if internal services are exposed via the SSRF vector. The absence of vendor response and patches prolongs exposure, increasing the window for exploitation.

To mitigate CVE-2026-3026, organizations should implement strict input validation and sanitization on the 'upfile' parameter to ensure only legitimate URLs or local resources are processed. Employ allowlisting of trusted domains and block requests to internal IP ranges (e.g., 127.0.0.1, 10.0.0.0/8, 192.168.0.0/16) to prevent SSRF to internal services. Network segmentation should be enforced to limit the web server's ability to access sensitive internal resources. Deploy web application firewalls (WAFs) with rules targeting SSRF patterns to detect and block malicious requests. Monitor server logs for unusual outbound requests originating from the vulnerable endpoint. If possible, disable or restrict the functionality of the UEditor component's remote image fetching feature until a vendor patch or update is available. Conduct regular security assessments and penetration tests focusing on SSRF vectors. Finally, maintain awareness of any future vendor advisories or patches and apply them promptly once released.