CVE-2025-6142 is a Server-Side Request Forgery (SSRF) vulnerability identified in the Intera InHire product, specifically affecting versions up to 20250530. SSRF vulnerabilities allow an attacker to manipulate server-side functionality to make HTTP requests to arbitrary domains or internal systems that the server can access. In this case, the vulnerability arises from improper validation or sanitization of the argument named '29chcotoo9', which can be manipulated remotely without authentication or user interaction. The attacker can exploit this flaw to induce the server to send crafted requests to internal or external resources, potentially leading to unauthorized information disclosure, internal network reconnaissance, or further exploitation of internal services. Although the exact functionality affected by this argument is unknown, the vulnerability is classified as critical by the initial report but carries a CVSS 4.0 base score of 5.3 (medium severity) due to limited impact on confidentiality, integrity, and availability, and the requirement of low privileges (PR:L). The vendor has not responded to the disclosure, and no patches or mitigations have been published yet. No known exploits are currently observed in the wild, but public disclosure increases the risk of exploitation attempts. The vulnerability does not require user interaction and can be triggered remotely, increasing its attack surface. The CVSS vector indicates low complexity (AC:L), no authentication required (AT:N), and partial impacts on confidentiality, integrity, and availability (VC:L, VI:L, VA:L).

For European organizations using Intera InHire, this SSRF vulnerability poses a moderate risk. Exploitation could allow attackers to pivot into internal networks, access sensitive internal services, or exfiltrate data not normally exposed externally. Given that InHire is likely used in HR or recruitment contexts, sensitive personal data could be at risk, impacting GDPR compliance and leading to reputational damage and regulatory penalties. The ability to perform SSRF without authentication increases the risk of automated scanning and exploitation attempts. While the CVSS score is medium, the potential for lateral movement within corporate networks or access to internal APIs could escalate the impact. Organizations with complex internal network architectures or those exposing sensitive internal services to the InHire server are particularly vulnerable. The lack of vendor response and patches means organizations must rely on compensating controls. The threat is heightened in sectors with stringent data protection requirements, such as finance, healthcare, and government entities across Europe.

1. Network Segmentation: Restrict the InHire server's outbound network access to only necessary external endpoints using firewall rules or proxy configurations to prevent arbitrary SSRF exploitation. 2. Input Validation and Filtering: Implement web application firewalls (WAFs) with custom rules to detect and block suspicious requests targeting the '29chcotoo9' parameter or unusual request patterns indicative of SSRF attempts. 3. Internal Service Hardening: Ensure internal services are not accessible or require strong authentication, minimizing the impact if SSRF is exploited to reach internal endpoints. 4. Monitoring and Logging: Enable detailed logging of all inbound requests to the InHire application, focusing on the suspicious parameter, and monitor for anomalous outbound requests from the server. 5. Incident Response Preparation: Develop and test incident response plans specific to SSRF exploitation scenarios, including network isolation and forensic analysis. 6. Vendor Engagement: Continue to seek updates from Intera regarding patches or official mitigations and subscribe to threat intelligence feeds for emerging exploit information. 7. Temporary Workarounds: If possible, disable or restrict the functionality associated with the vulnerable parameter until a patch is available. 8. Access Controls: Limit access to the InHire application to trusted networks or VPN users to reduce exposure to external attackers.