GHSA-PWFH-MQP3-PQWJ

Vulnerability from github – Published: 2026-05-11 15:29 – Updated: 2026-06-08 23:48
VLAI
Summary
Ella Core has a UE Security Capability bypass on NGAP PathSwitchRequest
Details

Summary

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.

Impact

A gNB can corrupt Ella Core's stored UE security capabilities for a target UE.

Fix

The PathSwitchRequest handler now compares the received UE Security Capabilities against Ella Core's locally stored values, preserves the stored values on mismatch, returns them in the PathSwitchRequestAcknowledge, and logs the event.

Severity
6.1 (Medium)
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:L
Show details on source website
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{
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/ellanetworks/core"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.10.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-44475"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-358"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-05-11T15:29:37Z",
    "nvd_published_at": "2026-05-27T17:16:39Z",
    "severity": "MODERATE"
  },
  "details": "## Summary\n\nElla 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\u0027s stored UE security capabilities for any UE with arbitrary values by sending a single crafted PathSwitchRequest.\n\n## Impact\n\nA gNB can corrupt Ella Core\u0027s stored UE security capabilities for a target UE.\n\n## Fix\n\nThe PathSwitchRequest handler now compares the received UE Security Capabilities against Ella Core\u0027s locally stored values, preserves the stored values on mismatch, returns them in the PathSwitchRequestAcknowledge, and logs the event.",
  "id": "GHSA-pwfh-mqp3-pqwj",
  "modified": "2026-06-08T23:48:59Z",
  "published": "2026-05-11T15:29:37Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/ellanetworks/core/security/advisories/GHSA-pwfh-mqp3-pqwj"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-44475"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/ellanetworks/core"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:L",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Ella Core has a UE Security Capability bypass on NGAP PathSwitchRequest"
}


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