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

Source: https://junglewise.ai/threats/cve-2026-33065-free5gc-udm-incorrectly-returns-500-for-empty-supi-path-parameter  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-03-23  
License: CC BY 4.0 with a link back

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)](https://junglewise.ai/threats/technologies/github-com-free5gc-udm). Vendors: [Go](https://junglewise.ai/threats/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

  ```sh
  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

## Related threats

- [free5GC UDM information disclosure via improper SUPI validation](https://junglewise.ai/threats/cve-2026-42459-free5gc-udm-information-disclosure-via-improper-supi-validation)
- [free5GC UDM vulnerable to null byte injection in URL path parameters causing 500 Internal Server Error](https://junglewise.ai/threats/cve-2026-33191-free5gc-udm-vulnerable-to-null-byte-injection-in-url-path)
- [free5GC UDM incorrectly returns 500 for empty supi path parameter in PATCH sdm-subscriptions reques](https://junglewise.ai/threats/cve-2026-33192-free5gc-udm-incorrectly-returns-500-for-empty-supi-path-parameter)
- [GO-2026-4757 - free5GC UDM DataChangeNotification Procedure Panic Due to Nil Pointer Dereference in github.com/free5gc/udm](https://junglewise.ai/threats/cve-2026-33064-free5gc-udm-datachangenotification-procedure-panic-due-to-nil)
- [GO-2025-4162 - Free5GC is vulnerable to DoS via the Nudm_SubscriberDataManagement API in github.com/free5gc/openapi](https://junglewise.ai/threats/cve-2025-60633-free5gc-is-vulnerable-to-dos-via-the-nudm)