CVE-2026-33065: free5GC UDM incorrectly returns 500 for empty supi path parameter in DELETE sdm-subscriptions request

CVE-2026-33065 · Severity: medium · CVSS 4 · Published 2026-03-23

free5GC UDM incorrectly returns 500 for empty supi path parameter in DELETE sdm-subscriptions request in github.com/free5gc/udm

Technologies: github.com/free5gc/udm (Go). Vendors: Go.

Quick answers

Is CVE-2026-33065 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-33065 being exploited in the wild.
How severe is CVE-2026-33065?
Medium severity, with a CVSS score of 4, published 23 March 2026.
Which products and versions are affected?
github.com/free5gc/udm (Go) SEMVER:introduced=0,fixed=1.4.2.
Is there a fix for CVE-2026-33065?
Yes. github.com/free5gc/udm (Go): upgrade to 1.4.2 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
Am I affected by CVE-2026-33065?
Check whether you run github.com/free5gc/udm (Go) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • github.com/free5gc/udm (Go): upgrade to 1.4.2 or later
    go get github.com/free5gc/udm@v1.4.2

Affected products

  • github.com/free5gc/udm (Go) SEMVER:introduced=0,fixed=1.4.2

Identifiers

  • CVE-2026-33065
  • GHSA-958m-gxmc-mccm
  • GO-2026-4758

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