{"schema_version":"1.7.5","id":"GHSA-j478-p7vq-3347","published":"2026-03-12T20:33:28Z","modified":"2026-03-23T04:56:01.367525150Z","aliases":["CVE-2026-32320","GO-2026-4691"],"summary":"Ella Core: AMF DoS via malformed PathSwitchRequest with empty NR security capability bitstrings","details":"## Summary\n\nElla Core panics when processing a PathSwitchRequest containing UE Security Capabilities with zero-length NR encryption or integrity protection algorithm bitstrings, resulting in a denial of service.\n\n## Impact\n\nAn attacker able to send crafted NGAP messages to Ella Core can crash the process, causing service disruption for all connected subscribers. No authentication is required.\n\n## Fix\n\nAdded length validation on NR algorithm bitstrings before accessing them in the PathSwitchRequest handler.","affected":[{"package":{"name":"github.com/ellanetworks/core","ecosystem":"Go","purl":"pkg:golang/github.com/ellanetworks/core"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"1.5.1"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/03/GHSA-j478-p7vq-3347/GHSA-j478-p7vq-3347.json"}}],"references":[{"type":"WEB","url":"https://github.com/ellanetworks/core/security/advisories/GHSA-j478-p7vq-3347"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-32320"},{"type":"PACKAGE","url":"https://github.com/ellanetworks/core"},{"type":"WEB","url":"https://github.com/ellanetworks/core/releases/tag/v1.5.1"},{"type":"WEB","url":"https://pkg.go.dev/vuln/GO-2026-4691"}],"database_specific":{"cwe_ids":["CWE-125"],"github_reviewed":true,"github_reviewed_at":"2026-03-12T20:33:28Z","nvd_published_at":"2026-03-13T19:54:42Z","severity":"MODERATE"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}