CVE-2026-34762: CWE-20: Improper Input Validation in ellanetworks core
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.
AI Analysis
Technical Summary
In ellanetworks core versions before 1.8.0, the PUT /api/v1/subscriber/{imsi} API improperly validates input by accepting IMSI identifiers from both the URL path and the JSON request body without verifying their consistency. This improper input validation (CWE-20) allows an authenticated NetworkManager to alter subscriber policies for IMSIs other than the one specified in the URL path, while audit logs reflect the IMSI from the URL path, causing a mismatch between actual changes and recorded audit data. This vulnerability is fixed in version 1.8.0.
Potential Impact
The vulnerability allows an authenticated NetworkManager to modify subscriber policies for IMSIs different from those recorded in audit logs, potentially undermining audit integrity and accountability. There is no direct confidentiality or availability impact reported. The CVSS score of 2.7 reflects a low severity with limited impact, requiring high privileges to exploit.
Mitigation Recommendations
Upgrade ellanetworks core to version 1.8.0 or later, where this input validation issue has been fixed. No other mitigation is indicated or required.
CVE-2026-34762: CWE-20: Improper Input Validation in ellanetworks core
Description
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.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
In ellanetworks core versions before 1.8.0, the PUT /api/v1/subscriber/{imsi} API improperly validates input by accepting IMSI identifiers from both the URL path and the JSON request body without verifying their consistency. This improper input validation (CWE-20) allows an authenticated NetworkManager to alter subscriber policies for IMSIs other than the one specified in the URL path, while audit logs reflect the IMSI from the URL path, causing a mismatch between actual changes and recorded audit data. This vulnerability is fixed in version 1.8.0.
Potential Impact
The vulnerability allows an authenticated NetworkManager to modify subscriber policies for IMSIs different from those recorded in audit logs, potentially undermining audit integrity and accountability. There is no direct confidentiality or availability impact reported. The CVSS score of 2.7 reflects a low severity with limited impact, requiring high privileges to exploit.
Mitigation Recommendations
Upgrade ellanetworks core to version 1.8.0 or later, where this input validation issue has been fixed. No other mitigation is indicated or required.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-03-30T19:17:10.225Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 69cec5aae6bfc5ba1dfbd81a
Added to database: 4/2/2026, 7:38:18 PM
Last enriched: 4/9/2026, 10:46:34 PM
Last updated: 5/20/2026, 3:56:39 PM
Views: 77
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