free5GC has improper error handling in NEF with information exposure
Published Feb 24, 2026
6.6
MEDIUMCVSS 4.0
EPSS 0.44%
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.
Affected products
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- Version <= 1.4.1StatusaffectedConstraints-
- Version
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
References (5)
- https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-7462 Advisory
- https://github.com/free5gc/free5gc/issues/753 x_refsource_MISCExploitIssue TrackingPatchVendor Advisory
- https://github.com/free5gc/free5gc/security/advisories/GHSA-6468-f87j-6g82 x_refsource_CONFIRMPatchVendor Advisory
- https://github.com/free5gc/udr/commit/754d23b03755ad59077ed529ce3b971e477080c4 x_refsource_MISCPatch
- https://github.com/free5gc/udr/pull/56 x_refsource_MISCIssue TrackingPatch
| Link | Providers | Tags |
|---|---|---|
| https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-7462 | Advisory | |
| https://github.com/free5gc/free5gc/issues/753 | x_refsource_MISCExploitIssue TrackingPatchVendor Advisory | |
| https://github.com/free5gc/free5gc/security/advisories/GHSA-6468-f87j-6g82 | x_refsource_CONFIRMPatchVendor Advisory | |
| https://github.com/free5gc/udr/commit/754d23b03755ad59077ed529ce3b971e477080c4 | x_refsource_MISCPatch | |
| https://github.com/free5gc/udr/pull/56 | x_refsource_MISCIssue TrackingPatch |
Change history (0)
No recorded changes yet.