Vulnerability-Lookup

CVE-2026-34762 (GCVE-0-2026-34762)

Vulnerability from cvelistv5 – Published: 2026-04-02 19:03 – Updated: 2026-04-03 15:39

Title

Ella Core Has Audit Log Falsification via Path/Body IMSI Mismatch in UpdateSubscriber

Summary

Ella Core is a 5G core designed for private networks. Prior to version 1.8.0, the PUT /api/v1/subscriber/{imsi} API accepts an IMSI identifier from both the URL path and the JSON request body but never verifies they match. This allows an authenticated NetworkManager to modify any subscriber's policy while the audit trail records a fabricated or unrelated subscriber IMSI. This issue has been patched in version 1.8.0.

Severity

2.7 (Low)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-20 - Improper Input Validation

Assigner

GitHub_M

References

2 references

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

Impacted products

1 product

Vendor	Product	Version
ellanetworks	core	Affected: < 1.8.0

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-34762

Vulnerability from fkie_nvd - Published: 2026-04-02 20:16 - Updated: 2026-06-17 10:39

Severity

2.7 (Low) - CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N

Summary

References

	URL	Tags
	security-advisories@github.com	https://github.com/ellanetworks/core/releases/tag/v1.8.0	Release Notes
	security-advisories@github.com	https://github.com/ellanetworks/core/security/advisories/GHSA-xw45-cc32-442f	Vendor Advisory

Impacted products

	Vendor	Product	Version
	ellanetworks	ella_core	*

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "core",
          "vendor": "ellanetworks",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.8.0"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:ellanetworks:ella_core:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "F79EF764-4DAE-481E-9B49-974F342B1860",
              "versionEndExcluding": "1.8.0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
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  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Ella Core is a 5G core designed for private networks. Prior to version 1.8.0, the PUT /api/v1/subscriber/{imsi} API accepts an IMSI identifier from both the URL path and the JSON request body but never verifies they match. This allows an authenticated NetworkManager to modify any subscriber\u0027s policy while the audit trail records a fabricated or unrelated subscriber IMSI. This issue has been patched in version 1.8.0."
    }
  ],
  "id": "CVE-2026-34762",
  "lastModified": "2026-06-17T10:39:34.763",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 2.7,
          "baseSeverity": "LOW",
          "confidentialityImpact": "NONE",
          "integrityImpact": "LOW",
          "privilegesRequired": "HIGH",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N",
          "version": "3.1"
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        "impactScore": 1.4,
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        "type": "Secondary"
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    }
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        {
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      "type": "Secondary"
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}

GHSA-XW45-CC32-442F

Vulnerability from github – Published: 2026-04-01 22:59 – Updated: 2026-04-06 17:32

Summary

Ella Core Has Audit Log Falsification via Path/Body IMSI Mismatch in UpdateSubscriber

Details

Summary

The PUT /api/v1/subscriber/{imsi} API accepts an IMSI identifier from both the URL path and the JSON request body but never verifies they match. This allows an authenticated NetworkManager to modify any subscriber's policy while the audit trail records a fabricated or unrelated subscriber IMSI.

Impact

A NetworkManager or Admin can modify any subscriber's QoS policy (potentially degrading service or altering traffic routing) while the audit log attributes the change to a non-existent or unrelated subscriber. Post-incident forensic searches for the affected subscriber's IMSI would find no matching audit entries.

Fix

Remove the IMSI as a body param and use the path param as a single source of truth.

Severity

2.7 (Low)


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

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 1.7.0"
      },
      "package": {
        "ecosystem": "Go",
        "name": "github.com/ellanetworks/core"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.8.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-34762"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-20"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-04-01T22:59:50Z",
    "nvd_published_at": "2026-04-02T20:16:25Z",
    "severity": "LOW"
  },
  "details": "## Summary\n\nThe `PUT /api/v1/subscriber/{imsi}` API accepts an IMSI identifier from both the URL path and the JSON request body but never verifies they match. This allows an authenticated NetworkManager to modify any subscriber\u0027s policy while the audit trail records a fabricated or unrelated subscriber IMSI.\n\n## Impact\n\nA NetworkManager or Admin can modify any subscriber\u0027s QoS policy (potentially degrading service or altering traffic routing) while the audit log attributes the change to a non-existent or unrelated subscriber. Post-incident forensic searches for the affected subscriber\u0027s IMSI would find no matching audit entries.\n\n## Fix\n\nRemove the IMSI as a body param and use the path param as a single source of truth.",
  "id": "GHSA-xw45-cc32-442f",
  "modified": "2026-04-06T17:32:53Z",
  "published": "2026-04-01T22:59:50Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/ellanetworks/core/security/advisories/GHSA-xw45-cc32-442f"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-34762"
    },
    {
      "type": "WEB",
      "url": "https://github.com/ellanetworks/core/commit/7f64b7a7c7a22cb9c05ac2c1c3a0cf0eaefac3e5"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/ellanetworks/core"
    },
    {
      "type": "WEB",
      "url": "https://github.com/ellanetworks/core/releases/tag/v1.8.0"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Ella Core Has Audit Log Falsification via Path/Body IMSI Mismatch in UpdateSubscriber"
}

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.

Detection rules are retrieved from Rulezet.

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.

Action not permitted

CVE-2026-34762 (GCVE-0-2026-34762)

FKIE_CVE-2026-34762

GHSA-XW45-CC32-442F

Summary

Impact

Fix

Tags

Sightings

Nomenclature