Description

free5GC UDR is the user data repository (UDR) for free5GC, an an open-source project for 5th generation (5G) mobile core networks. In versions up to and including 1.4.1, the NEF component reliably leaks internal parsing error details (e.g., invalid character 'n' after top-level value) to remote clients, which can aid attackers in service fingerprinting. All deployments of free5GC using the Nnef_PfdManagement service may be affected. free5gc/udr pull request 56 contains a patch for the issue. There is no direct workaround at the application level. The recommendation is to apply the provided patch.

INFO

Published Date :

2026-02-24T00:21:18.510Z

Last Modified :

2026-02-26T14:36:45.483Z

Source :

GitHub_M
AFFECTED PRODUCTS

The following products are affected by CVE-2026-27643 vulnerability.

Vendors Products
Free5gc
  • Udr
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-27643.

URL Resource
https://github.com/free5gc/free5gc/issues/753 cve-icon cve-icon
https://github.com/free5gc/free5gc/security/advisories/GHSA-6468-f87j-6g82 cve-icon cve-icon
https://github.com/free5gc/udr/commit/754d23b03755ad59077ed529ce3b971e477080c4 cve-icon cve-icon
https://github.com/free5gc/udr/pull/56 cve-icon cve-icon
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CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
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SS Confidentiality
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Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact