{"id":"GHSA-3366-gw57-fcm5","summary":"Ella Core panics on malformed ULNASTransport Message without a Request Type","details":"## Summary\nElla Core panics when processing malformed UL NAS Transport NAS messages without a Request Type.\n\n## Impact\nAn attacker able to send crafted NAS messages to Ella Core can crash the process, causing service disruption for all connected subscribers. No authentication is required.\n\n## Fix\nAdd a guard when receiving an UL NAS Message without a Request Type given no SM Context.","aliases":["CVE-2026-33283","GO-2026-4776"],"modified":"2026-03-25T21:48:52.184429Z","published":"2026-03-19T17:47:12Z","database_specific":{"severity":"MODERATE","github_reviewed":true,"github_reviewed_at":"2026-03-19T17:47:12Z","nvd_published_at":"2026-03-24T00:16:30Z","cwe_ids":["CWE-476"]},"references":[{"type":"WEB","url":"https://github.com/ellanetworks/core/security/advisories/GHSA-3366-gw57-fcm5"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-33283"},{"type":"PACKAGE","url":"https://github.com/ellanetworks/core"}],"affected":[{"package":{"name":"github.com/ellanetworks/core","ecosystem":"Go","purl":"pkg:golang/github.com/ellanetworks/core"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"1.6.0"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/03/GHSA-3366-gw57-fcm5/GHSA-3366-gw57-fcm5.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}