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.
Metrics
Affected Vendors & Products
References
History
Thu, 23 Apr 2026 19:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Free5gc free5gc
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| CPEs | cpe:2.3:a:free5gc:free5gc:*:*:*:*:*:*:*:* cpe:2.3:a:free5gc:udr:*:*:*:*:*:go:*:* |
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| Vendors & Products |
Free5gc free5gc
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| Metrics |
cvssV3_1
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Wed, 22 Apr 2026 14:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
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Wed, 22 Apr 2026 01:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Free5gc
Free5gc udr |
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| Vendors & Products |
Free5gc
Free5gc udr |
Wed, 22 Apr 2026 00:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| 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 1.4.2, 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. | |
| Title | free5GC UDR: Fail-open handling in PolicyDataSubsToNotifyPost allows unintended subscription creation | |
| Weaknesses | CWE-754 | |
| References |
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| Metrics |
cvssV4_0
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Status: PUBLISHED
Assigner: GitHub_M
Published: 2026-04-21T23:47:33.125Z
Updated: 2026-04-22T13:12:25.224Z
Reserved: 2026-04-10T22:50:01.358Z
Link: CVE-2026-40343
Updated: 2026-04-22T13:12:21.523Z
Status : Analyzed
Published: 2026-04-22T00:16:27.670
Modified: 2026-04-23T19:44:39.943
Link: CVE-2026-40343
No data.