CVE-2026-40343

MEDIUM

5.8

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.

CVE Details

CVSS v3.1 Score5.8

SeverityMEDIUM

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published4/22/2026

Last Modified4/23/2026

Sourcenvd

Honeypot Sightings0

Affected Products

free5gc:free5gcfree5gc:udr

Weaknesses (CWE)

CWE-754

References

https://github.com/free5gc/free5gc/security/advisories/GHSA-jwch-w7wh-gqjm(security-advisories@github.com)

IOC Correlations

No correlations recorded

This product uses data from the NVD API but is not endorsed or certified by the NVD.