Server-Side Request Forgery Vulnerability in songxinjianqwe Chat

The songxinjianqwe Chat application contains a server-side request forgery (SSRF) vulnerability identified as CVE-2026-97326. The issue resides within the chat-server component, specifically in the file ChatServer.java. This vulnerability allows remote, unauthenticated attackers to manipulate the application's internal request-handling logic to force the server to initiate unintended network connections. Such an attack could be leveraged to probe internal network services, bypass access controls, or exfiltrate sensitive data from internal systems. The vulnerability affects all versions of the application up to commit hash ac63d25297079eed5e4ba7e88d3b7a032637150d. Because the project utilizes a rolling release model, no specific version numbers are available for remediation. Publicly available exploit code exists, increasing the risk of active exploitation. The vendor has not responded to vulnerability disclosures, leaving remediation status uncertain.

Attack Chain

1. Attacker identifies a public-facing instance of the songxinjianqwe Chat server.
2. Attacker interacts with the ChatServer.java component via remote HTTP requests.
3. Attacker identifies a parameter or input field within the API that triggers backend network requests.
4. Attacker injects a malicious URI into the vulnerable input field to target an internal network resource.
5. The ChatServer process parses the malicious input and makes an unintended request to the specified internal IP address or domain.
6. Attacker observes response data or confirms successful connectivity to internal services to achieve unauthorized access or exfiltration.

Impact

Successful exploitation of this SSRF vulnerability permits remote attackers to bypass network perimeters and interface with internal services that are otherwise unreachable. This can lead to unauthorized access to internal administration panels, internal API endpoints, or cloud metadata services. The degree of impact depends on the internal network topology and the permissions granted to the server hosting the Chat application.

Recommendation

Prioritize the identification and isolation of internet-facing songxinjianqwe Chat instances within the infrastructure. Because the vendor has not provided a patch, consider implementing the following mitigations:

• Restrict network egress traffic from the server running the Chat application to only necessary external endpoints, preventing the server from connecting to internal network ranges or sensitive cloud metadata services.
• Implement strict ingress filtering or WAF rules to block malformed requests targeting the chat-server API parameters identified in CVE-2026-97326.
• Monitor logs for unusual outbound connections originating from the chat-server application process, specifically requests directed toward private IP address ranges (e.g., 10.0.0.0/8, 172.16.0.0/12, 192.168.0.0/16).
• Transition internal chat services to a more secure alternative or apply compensating controls such as network segmentation if the service must remain public-facing.