Input Validation Flaw in Ella Core 5G Network Management
CVE-2026-34762

2.7LOW

Key Information:

Vendor

Ellanetworks

Status
Core
Vendor
CVE Published:
2 April 2026

What is CVE-2026-34762?

Ella Core, a 5G core designed for private networks, is susceptible to an input validation error in its API. Specifically, the PUT /api/v1/subscriber/{imsi} endpoint allows for an IMSI identifier to be provided both in the URL path and in the JSON body without verifying their consistency. This loophole enables an authenticated NetworkManager to alter the policies of any subscriber while the audit logs may display a misleading or unrelated IMSI. This vulnerability has been addressed in version 1.8.0 of Ella Core.

Affected Version(s)

core < 1.8.0

References

https://github.com/ellanetworks/core/security/advisories/...
x_refsource_CONFIRM
https://github.com/ellanetworks/core/releases/tag/v1.8.0
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CVSS V3.1

Score:
2.7
Severity:
LOW
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
High
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.