CVE-2026-47780

free5GC is an open-source implementation of the 5G core network. In 4.2.3 and earlier, HandleCreateEeSubscriptions and HandleQueryeesubscriptions in free5gc/udr internal/sbi/api_datarepository.go validate the ueId path value with a regular expression whose final .+ alternative accepts every non-empty string instead of restricting identifiers to supported SUPI and GPSI formats. An actor with network reachability to the UDR SBI can submit a non-3GPP identifier to /nudr-dr/v2/subscription-data/{ueId}/context-data/ee-subscriptions, causing the identifier to pass validation and enter the normal create or query flow. The advisory does not independently establish whether authentication is required. Invalid identifiers can be persisted and retrieved as subscription records, enabling unauthorized data creation, UDR namespace pollution, persistent subscriber-metadata corruption, and interference with downstream components that trust stored identifiers to use valid 3GPP formats. The exposure is most relevant in lab, test, or loosely segmented service-based-interface deployments where direct UDR access is possible.

CVSS

No CVSS.

References

Link	Resource
https://github.com/free5gc/free5gc/security/advisories/GHSA-6gxq-gpr8-xgjp
https://github.com/free5gc/free5gc/security/advisories/GHSA-6gxq-gpr8-xgjp

Configurations

No configuration.

History

No history.

Information

Published : 2026-09-15 15:17

Updated : 2026-09-15 16:17

NVD link : CVE-2026-47780

Mitre link : CVE-2026-47780

CVE.ORG link : CVE-2026-47780

JSON object : View

Products Affected

No product.

CWE

CWE-20

Improper Input Validation

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