CVE-2025-47907 is a high-severity race condition vulnerability (CWE-362) found in the Go standard library's database/sql package, affecting versions up to 1.24.0. The flaw arises when a query is cancelled—typically by cancelling the context passed to query methods—while concurrently calling the Scan method on the returned Rows object. This improper synchronization leads to a race condition where the results of one query can be overwritten by those of another query executing in parallel. Consequently, the Scan method may return unexpected data from a different query or an error, compromising data integrity and potentially causing application logic errors. The vulnerability is exploitable remotely (AV:N) without authentication or user interaction but requires high attack complexity (AC:H), indicating that exploitation demands specific conditions or timing. The impact primarily affects confidentiality (high), with some integrity and availability impacts (low). No known exploits are currently reported in the wild, and no patches have been linked yet. This vulnerability is significant because the Go database/sql package is widely used in backend services and applications for database interactions, and improper handling of query cancellations can lead to data leakage or corruption in concurrent environments.

For European organizations, this vulnerability poses a considerable risk, especially for those relying on Go-based backend systems handling concurrent database queries. The race condition can lead to leakage of sensitive data across queries, undermining confidentiality obligations under regulations like GDPR. Data integrity issues may cause erroneous business decisions or corrupt records, affecting operational reliability. Availability impacts, though low, could disrupt services if errors propagate. Sectors such as finance, healthcare, and government, which often use Go for scalable backend services, are particularly vulnerable. The complexity of exploitation reduces immediate risk, but the potential for silent data leakage or corruption necessitates urgent attention. Organizations with multi-tenant or high-concurrency database applications are at higher risk, as the flaw manifests under parallel query execution and cancellation scenarios.

To mitigate this vulnerability, European organizations should: 1) Upgrade to a fixed version of the Go standard library once patches are released, as no official patch links are currently available. 2) Until patched, avoid cancelling queries during concurrent Scan operations or serialize query execution to prevent overlapping Scan calls. 3) Implement additional application-level synchronization to ensure that query cancellations and Scans do not overlap on shared Rows objects. 4) Conduct thorough code reviews and testing focusing on concurrent database access patterns to detect and remediate unsafe usage. 5) Monitor application logs for unexpected Scan errors or anomalous query results that may indicate exploitation attempts. 6) Employ runtime application self-protection (RASP) or database activity monitoring tools to detect unusual query cancellation patterns. 7) Educate developers on safe concurrency practices with database/sql to prevent misuse that could trigger this race condition.