Vulnerability-Lookup

GHSA-Q669-4GMV-G8MF

Vulnerability from github – Published: 2026-03-19 17:47 – Updated: 2026-03-25 20:49

Summary

Ella Core panics on invalid PDU Session IDs in NGAP messages

Details

Summary

Ella Core panics when processing NGAP messages with invalid PDU Session IDs outside of 1-15.

Impact

An 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.

Fix

Added PDU Session ID validations during NGAP message handling.

Severity ?

6.5 (Medium)


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

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/ellanetworks/core"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.6.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-33281"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-129"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-03-19T17:47:01Z",
    "nvd_published_at": "2026-03-24T00:16:30Z",
    "severity": "MODERATE"
  },
  "details": "## Summary\n\nElla Core panics when processing NGAP messages with invalid PDU Session IDs outside of 1-15.\n\n## Impact\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\nAdded PDU Session ID validations during NGAP message handling.",
  "id": "GHSA-q669-4gmv-g8mf",
  "modified": "2026-03-25T20:49:10Z",
  "published": "2026-03-19T17:47:01Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/ellanetworks/core/security/advisories/GHSA-q669-4gmv-g8mf"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-33281"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/ellanetworks/core"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Ella Core panics on invalid PDU Session IDs in NGAP messages"
}

CVE-2026-33281 (GCVE-0-2026-33281)

Vulnerability from cvelistv5 – Published: 2026-03-23 23:46 – Updated: 2026-03-24 13:32

Title

Ella Core panics on invalid PDU Session IDs in NGAP messages

Summary

Ella Core is a 5G core designed for private networks. Versions prior to 1.6.0 panic when processing NGAP messages with invalid PDU Session IDs outside of 1-15. An 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. Version 1.6.0 added PDU Session ID validations during NGAP message handling.

Severity ?

6.5 (Medium)


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

CWE

CWE-129 - Improper Validation of Array Index

Assigner

GitHub_M

References

URL

Tags

https://github.com/ellanetworks/core/security/adv…

x_refsource_CONFIRM

Impacted products

	Vendor	Product	Version
	ellanetworks	core	Affected: < 1.6.0

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-33281",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-03-24T13:32:12.303642Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-03-24T13:32:41.782Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "core",
          "vendor": "ellanetworks",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.6.0"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Ella Core is a 5G core designed for private networks. Versions prior to 1.6.0 panic when processing NGAP messages with invalid PDU Session IDs outside of 1-15. An 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. Version 1.6.0 added PDU Session ID validations during NGAP message handling."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-129",
              "description": "CWE-129: Improper Validation of Array Index",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-03-23T23:46:12.797Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/ellanetworks/core/security/advisories/GHSA-q669-4gmv-g8mf",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/ellanetworks/core/security/advisories/GHSA-q669-4gmv-g8mf"
        }
      ],
      "source": {
        "advisory": "GHSA-q669-4gmv-g8mf",
        "discovery": "UNKNOWN"
      },
      "title": "Ella Core panics on invalid PDU Session IDs in NGAP messages"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-33281",
    "datePublished": "2026-03-23T23:46:12.797Z",
    "dateReserved": "2026-03-18T18:55:47.425Z",
    "dateUpdated": "2026-03-24T13:32:41.782Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date

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.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-Q669-4GMV-G8MF

Summary

Impact

Fix

CVE-2026-33281 (GCVE-0-2026-33281)

Tags

Sightings

Nomenclature