Ella Core: UE Security Capability bypass on NGAP PathSwitchRequest

{
  "id": "7a166837bd06d4514e9541d517ed417bd6e4eada1d715e649c7126516099d1a1",
  "url": "https://osv.dev/vulnerability/CVE-2026-44475",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Ella Core: UE Security Capability bypass on NGAP PathSwitchRequest",
    "summary": "Ella Core is a 5G core designed for private networks. Prior to 1.10.0, Ella Core does not verify the UE Security Capabilities received in NGAP PathSwitchRequest messages against its locally stored values. A malicious gNB can overwrite Ella Core's stored UE security capabilities for any UE with arbitrary values by sending a single crafted PathSwitchRequest. This vulnerability is fixed in 1.10.0.",
    "evidence": "osv:CVE-2026-44475",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-44475",
      "aliases": [
        "CVE-2026-44475",
        "GHSA-pwfh-mqp3-pqwj",
        "GO-2026-5554"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:L"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/ellanetworks/core",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "625555b0abcd5d2f788d35160d099a92f1e8aa67"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "1.10.0"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StringRangeExpression"
                  },
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "1.10.0"
                      }
                    ],
                    "source": "DESCRIPTION"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v1.9.1",
            "v1.9.0",
            "v1.8.1",
            "v1.8.0",
            "v1.7.0",
            "v1.6.0",
            "v1.5.2",
            "v1.5.1",
            "v1.5.0",
            "v1.4.0",
            "v1.3.0",
            "v1.2.0",
            "v1.1.0",
            "v1.0.0",
            "v0.7.0",
            "v0.6.0",
            "v0.5.0",
            "v0.4.2",
            "v0.4.1",
            "v0.4.0",
            "v0.3.1",
            "v0.3.0",
            "v0.2.0",
            "v0.1.0",
            "v0.0.20",
            "v0.0.19",
            "v0.0.18",
            "v0.0.17",
            "v0.0.16",
            "v0.0.15",
            "v0.0.14",
            "v0.0.13",
            "v0.0.12",
            "v0.0.11",
            "v0.0.10",
            "v0.0.9",
            "v0.0.8",
            "v0.0.7",
            "v0.0.6",
            "v0.0.5",
            "v0.0.4"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-44475.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:27.293158171Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/44xxx/CVE-2026-44475.json",
        "https://github.com/ellanetworks/core/security/advisories/GHSA-pwfh-mqp3-pqwj",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-44475"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-358"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/44xxx/CVE-2026-44475.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-44475",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 493856,
  "published_at": "2026-05-27T15:15:27.767+00:00"
}