{"id":"CVE-2026-32320","aliases":["GHSA-j478-p7vq-3347","GO-2026-4691"],"url":"https://o3.security/vulnerability/CVE-2026-32320","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.","published":"2026-03-12T21:34:50.318Z","modified":"2026-08-12T03:51:12.739078305Z","cvss":{"score":6.5,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Go","name":"github.com/ellanetworks/core","fixedVersion":"1.5.1"}],"fix":null,"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/32xxx/CVE-2026-32320.json"},{"type":"ADVISORY","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"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:12.739078305Z"}}