{"id":"CVE-2026-42459","revision":"9fd788838b5a4c949269a48e71baea65","records":[{"revision":"9fd788838b5a4c949269a48e71baea65","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-42459","aliases":[],"title":"free5GC: Improper Input Validation and Generation of Error Message Containing Sensitive Information in github.com/free5gc/udm","description":"free5GC is an open-source implementation of the 5G core network. Prior to 4.2.2, the free5GC UDM component fails to validate the supi path parameter in six GET handlers of the nudm-sdm (Subscriber Data Management) service. An unauthenticated attacker can inject control characters into the SUPI parameter, causing UDM to forward a malformed request to UDR and return a 500 Internal Server Error response that exposes internal infrastructure details. This vulnerability is fixed in 4.2.2.","state":0,"publishedAt":"2026-05-27T15:53:45.452+00:00","modifiedAt":"2026-05-28T14:14:46.406+00:00","affected":[{"ecosystem":"Vendor product","name":"free5gc","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"free5gc\",\n                    \"product\": \"free5gc\",\n                    \"versions\": [\n                        {\n                            \"version\": \"< 4.2.2\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:P","score":7.7,"severity":"HIGH"}],"references":["https://github.com/free5gc/free5gc/security/advisories/GHSA-585v-hcgf-jhfr"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-42459","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-42459","identifiers":["CVE-2026-42459"]},"retained":false,"historicalAffected":[]}],"coverage":[]}