CVE-2026-34762: Github.com/ellanetworks/core Ella Core Has Audit Log Vulnerability

LOW
Advisory Identifier: GHSA-xw45-cc32-442f
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CVSS 2.7
CWE-20
Published
Advisory Summary

CVE-2026-34762 is a LOW (CVSS 2.7) ella core has audit log vulnerability (CWE-20: Improper Input Validation) affecting Github.com/ellanetworks/core libraries in the Go ecosystem. The issue involves ella core has audit log falsification via path/body imsi mismatch in updatesubscriber. Remediation is available by upgrading affected packages to version 1.8.0.

CVE-2026-34762 at a Glance

CVE Identifier CVE-2026-34762
GHSA Identifier GHSA-xw45-cc32-442f
Severity LOW
CVSS v3.1 Base Score 2.7
CWE Classification CWE-20: Improper Input Validation
Affected Product Github.com/ellanetworks/core
Package Ecosystem Go
Published Date
Last Updated

Security Impact

CVSS: 2.7

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required High (PR:H)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality None (C:N)
Integrity Low (I:L)
Availability None (A:N)

How to Fix CVE-2026-34762

To remediate this vulnerability, upgrade all affected Github.com/ellanetworks/core dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

github.com/ellanetworks/core fixed: 1.8.0 
Upgrade github.com/ellanetworks/core to 1.8.0
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

inspect dependencies for github.com/ellanetworks/core

How to Check if You Are Affected

To determine whether your application is affected by CVE-2026-34762, inspect your project dependencies for Github.com/ellanetworks/core:

inspect dependencies for github.com/ellanetworks/core

Analyze the terminal output to locate any version of Github.com/ellanetworks/core in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.8.0), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-20: Improper Input Validation, where the product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. In Github.com/ellanetworks/core, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

## 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.

CVE-2026-34762 Affected Github.com/ellanetworks/core Versions

1 component(s)
Fixed Versions:
1.8.0
Product / Package Ecosystem Affected Versions Fixed Version
github.com/ellanetworks/core
golang/github.com/ellanetworks/core
Go
< 1.8.0
1.8.0

References

GitHub Advisory / Wiki ADVISORY
https://github.com/ellanetworks/core/security/advisories/GHSA-xw45-cc32-442f
NVD — CVE-2026-34762 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-34762
Security Fix Commit FIX COMMIT
https://github.com/ellanetworks/core/commit/7f64b7a7c7a22cb9c05ac2c1c3a0cf0eaefac3e5
Github.com/ellanetworks/core Source Repository REPOSITORY
https://github.com/ellanetworks/core
Github.com/ellanetworks/core Release RELEASE
https://github.com/ellanetworks/core/releases/tag/v1.8.0

Frequently Asked Questions

What is CVE-2026-34762?
CVE-2026-34762 is a security vulnerability in Github.com/ellanetworks/core involving Ella Core Has Audit Log Falsification via Path/Body IMSI Mismatch in UpdateSubscriber under CWE-20: Improper Input Validation.
Which Github.com/ellanetworks/core versions are affected?
Affected versions include releases prior to 1.8.0 across affected packages: github.com/ellanetworks/core.
What version fixes CVE-2026-34762?
Upgrading to 1.8.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is github.com/ellanetworks/core affected?
Yes, github.com/ellanetworks/core is affected in releases prior to 1.8.0. Upgrade your dependency to 1.8.0 or later.
What is the CVSS score of CVE-2026-34762?
CVE-2026-34762 has a CVSS v3.1 base score of 2.7 (LOW) with vector string CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N.
What CWE is associated with CVE-2026-34762?
CVE-2026-34762 is classified under CWE-20: Improper Input Validation (The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.).
How can I check Go dependencies for CVE-2026-34762?
Run the dependency tree command: 'inspect dependencies for github.com/ellanetworks/core'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-xw45-cc32-442f",
  "modified" : "2026-04-06T17:32:53Z",
  "published" : "2026-04-01T22:59:50Z",
  "aliases" : [ "CVE-2026-34762" ],
  "summary" : "Ella Core Has Audit Log Falsification via Path/Body IMSI Mismatch in UpdateSubscriber",
  "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's policy while the audit trail records a fabricated or unrelated subscriber IMSI.\n\n## Impact\n\nA 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.\n\n## Fix\n\nRemove the IMSI as a body param and use the path param as a single source of truth.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Go",
      "name" : "github.com/ellanetworks/core"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.8.0"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 1.7.0"
    }
  } ],
  "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"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-20" ],
    "severity" : "LOW",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-04-01T22:59:50Z",
    "nvd_published_at" : "2026-04-02T20:16:25Z"
  }
}