CVE-2026-30047 is a reachable assertion vulnerability found in the /nsmf-pdusession/v1/sm-contexts component of Open5GS version 2.7.6. Attackers can exploit this flaw by sending a specially crafted DELETE request, triggering an assertion failure that results in a Denial of Service (DoS) condition. Open5GS is an open-source implementation of 5G core network functions, making this vulnerability relevant to telecom and network infrastructure environments. The vulnerability has been documented in the NVD and tracked via a corresponding GitHub issue. No authentication context is specified, suggesting the endpoint may be reachable without elevated privileges. The DoS impact could disrupt session management functions critical to 5G network operation. The severity has been assessed as High.