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CVE-2026-40343

6.9 medium SSVC exploitation: none Analyzed
NVD · CVE.org

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 1.4.2, a fail-open request handling flaw in the UDR service causes the `/nudr-dr/v2/policy-data/subs-to-notify` POST handler to continue processing requests even after request body retrieval or deserialization errors. This may allow unintended creation of Policy Data notification subscriptions with invalid, empty, or partially processed input, depending on downstream processor behavior. As of time of publication, a patched version is not available.

Fix

Patch, vendor advisory and mitigation references on NVD 1

Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.

Change history 1

  1. First seenCVSS 6.9 · free5gcNVD modified 2026-10-26 22:10

Affected (CPE criteria) 2

  • cpe:2.3:a:free5gc:free5gc:*:*:*:*:*:*:*:*
  • cpe:2.3:a:free5gc:udr:*:*:*:*:*:go:*:*

References 1