Vulnerability-Lookup

GHSA-PWFH-MQP3-PQWJ

Vulnerability from github – Published: 2026-05-11 15:29 – Updated: 2026-06-08 23:48

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

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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"
}

CVE-2026-44475 (GCVE-0-2026-44475)

Vulnerability from cvelistv5 – Published: 2026-05-27 15:15 – Updated: 2026-05-28 15:36

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.

Severity

6.1 (Medium)


                        
                          CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:L

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-05-28 15:35 UTC

CWE

CWE-358 - Improperly Implemented Security Check for Standard

Assigner

GitHub_M mitre root Scorecard

References

1 reference

URL	Tags
https://github.com/ellanetworks/core/security/adv…	x_refsource_CONFIRM

Impacted products

1 product

Vendor	Product	Version
ellanetworks	core	Affected: < 1.10.0

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-44475",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-05-28T15:35:53.555635Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-05-28T15:36:26.428Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "core",
          "vendor": "ellanetworks",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.10.0"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "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\u0027s stored UE security capabilities for any UE with arbitrary values by sending a single crafted PathSwitchRequest. This vulnerability is fixed in 1.10.0."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "ADJACENT_NETWORK",
            "availabilityImpact": "LOW",
            "baseScore": 6.1,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:L",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-358",
              "description": "CWE-358: Improperly Implemented Security Check for Standard",
              "lang": "en",
              "type": "CWE"
            }
          ]
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      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-27T15:15:27.767Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/ellanetworks/core/security/advisories/GHSA-pwfh-mqp3-pqwj",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/ellanetworks/core/security/advisories/GHSA-pwfh-mqp3-pqwj"
        }
      ],
      "source": {
        "advisory": "GHSA-pwfh-mqp3-pqwj",
        "discovery": "UNKNOWN"
      },
      "title": "Ella Core: UE Security Capability bypass on NGAP PathSwitchRequest"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-44475",
    "datePublished": "2026-05-27T15:15:27.767Z",
    "dateReserved": "2026-05-06T17:18:51.782Z",
    "dateUpdated": "2026-05-28T15:36:26.428Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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Action not permitted

GHSA-PWFH-MQP3-PQWJ

Summary

Impact

Fix

CVE-2026-44475 (GCVE-0-2026-44475)

Tags

Sightings

Nomenclature

Related by attack behaviour