{"id":"CVE-2026-78186","summary":"Open5GS HSS hss-cx-path.c assertion","details":"A flaw has been found in Open5GS up to 2.8.0. This affects an unknown function of the file src/hss/hss-cx-path.c of the component HSS. This manipulation of the argument User-Name causes reachable assertion. The attack is possible to be carried out remotely. The exploit has been published and may be used. Patch name: c9abe09421eb99bbf1cd7862a3d375e58a4eb9e4. It is recommended to apply a patch to fix this issue.","modified":"2026-08-27T19:14:07.630008Z","published":"2026-08-24T04:15:08.586Z","database_specific":{"cna_assigner":"VulDB","cwe_ids":["CWE-617"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/78xxx/CVE-2026-78186.json","unresolved_ranges":[{"extracted_events":[{"introduced":"2.5"},{"last_affected":"2.5"},{"introduced":"2.6"},{"last_affected":"2.6"}],"source":"AFFECTED_FIELD"}]},"references":[{"type":"WEB","url":"https://github.com/open5gs/open5gs/"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/78xxx/CVE-2026-78186.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-78186"},{"type":"ADVISORY","url":"https://vuldb.com/cve/CVE-2026-78186"},{"type":"ADVISORY","url":"https://vuldb.com/submit/885203"},{"type":"ADVISORY","url":"https://vuldb.com/vuln/394568"},{"type":"REPORT","url":"https://github.com/open5gs/open5gs/issues/4675"},{"type":"REPORT","url":"https://vuldb.com/vuln/394568/cti"},{"type":"FIX","url":"https://github.com/open5gs/open5gs/commit/c9abe09421eb99bbf1cd7862a3d375e58a4eb9e4"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/open5gs/open5gs","events":[{"introduced":"23c57b84b893f585908c95a1d7d94a8e5b484445"},{"fixed":"c9abe09421eb99bbf1cd7862a3d375e58a4eb9e4"}],"database_specific":{"extracted_events":[{"introduced":"2.0"},{"last_affected":"2.0"},{"introduced":"2.1"},{"last_affected":"2.1"},{"introduced":"2.2"},{"last_affected":"2.2"},{"introduced":"2.3"},{"last_affected":"2.3"},{"introduced":"2.4"},{"last_affected":"2.4"},{"introduced":"2.7"},{"last_affected":"2.7"},{"introduced":"2.8.0"},{"last_affected":"2.8.0"}],"source":["AFFECTED_FIELD","REFERENCES"]}}],"versions":["2.0","2.1","2.2","2.3","2.4","2.7","2.8.0","v2.8.0","v2.7.7","v2.7.2","v2.7.1","v2.7.0","v2.6.6","v2.6.4","v2.6.3","v2.6.2","v2.6.1","v2.4.9","v2.4.8","v2.4.7","v2.4.5","v2.4.4","v2.4.3","v2.4.1","v2.4.0","v2.3.6","v2.3.2","v2.3.0","v2.2.9","v2.2.8","v2.2.7","v2.2.6","v2.2.1","v2.2.0","v2.1.7","v2.1.5","v2.1.4","v2.1.3","v2.1.1","v2.1.0","v2.0.22","v2.0.18","v2.0.0"],"database_specific":{"vanir_signatures":[{"id":"CVE-2026-78186-18cbcdf4","signature_type":"Function","signature_version":"v1","source":"https://github.com/open5gs/open5gs/commit/c9abe09421eb99bbf1cd7862a3d375e58a4eb9e4","target":{"file":"src/hss/hss-cx-path.c","function":"hss_ogs_diam_cx_lir_cb"},"deprecated":false,"digest":{"length":4083,"function_hash":"140636965745711054483604951342843566887"}},{"signature_type":"Function","signature_version":"v1","source":"https://github.com/open5gs/open5gs/commit/c9abe09421eb99bbf1cd7862a3d375e58a4eb9e4","target":{"file":"src/hss/hss-cx-path.c","function":"hss_ogs_diam_cx_uar_cb"},"deprecated":false,"digest":{"function_hash":"180903753385833180896069729205434442654","length":5767},"id":"CVE-2026-78186-50e70d6e"},{"source":"https://github.com/open5gs/open5gs/commit/c9abe09421eb99bbf1cd7862a3d375e58a4eb9e4","target":{"file":"src/hss/hss-cx-path.c","function":"hss_ogs_diam_cx_mar_cb"},"deprecated":false,"digest":{"function_hash":"98325384720796291081241502920607981132","length":14523},"id":"CVE-2026-78186-5bb98ba5","signature_type":"Function","signature_version":"v1"},{"signature_type":"Line","signature_version":"v1","source":"https://github.com/open5gs/open5gs/commit/c9abe09421eb99bbf1cd7862a3d375e58a4eb9e4","target":{"file":"src/hss/hss-cx-path.c"},"deprecated":false,"digest":{"line_hashes":["270063092113960490885653392195246500111","49689680479991116516563005783306778871","22278795145612648221233722122692178324","108675664868079947198287786910112619560","139675285816739046830636438756087159028","42439070237845670592322884743077311222","115462277292034220496526189255090152626","224496102076236196393307947893805327705","47271307188992063235089423991767575576","170730490132433138102714507594119089239","225427885998603035978744985046771395024","142901573739479255232560795365324967276","170730490132433138102714507594119089239","225427885998603035978744985046771395024","142901573739479255232560795365324967276","216628101474473346182689454152752719047","311787302318497591297461453477232431479","8512475766662208956665076404158681676","209821619814681448128209224384990557205","77757126689083776468480962944616130854","58406630931297265744481025923248977723"],"threshold":0.9},"id":"CVE-2026-78186-b77b3dfb"},{"deprecated":false,"digest":{"length":9466,"function_hash":"56858208611972390017770651173722496292"},"id":"CVE-2026-78186-e8f8602e","signature_type":"Function","signature_version":"v1","source":"https://github.com/open5gs/open5gs/commit/c9abe09421eb99bbf1cd7862a3d375e58a4eb9e4","target":{"function":"hss_ogs_diam_cx_sar_cb","file":"src/hss/hss-cx-path.c"}}],"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-78186.json","vanir_signatures_modified":"2026-08-27T19:14:07Z"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N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