Is CVE-2026-44324 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-44324 being exploited in the wild.

How severe is CVE-2026-44324?

Medium severity, with a CVSS score of 6.5, published 27 May 2026.

Which products and versions are affected?

free5GC Udr < 1.4.3, <= 4.2.1; github.com/free5gc/udr (Go) < 1.4.3, SEMVER:introduced=0,fixed=1.4.3.

Is there a fix for CVE-2026-44324?

Yes. github.com/free5gc/udr (Go): upgrade to 1.4.3 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-44324 attacked?

It is attacked over the network, in a software library.

Am I affected by CVE-2026-44324?

Check whether you run free5GC Udr or github.com/free5gc/udr (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.

CVE-2026-44324: free5GC UDR denial of service via nil type assertion

Q: Which products and versions are affected?

free5GC Udr < 1.4.3, <= 4.2.1; github.com/free5gc/udr (Go) < 1.4.3, SEMVER:introduced=0,fixed=1.4.3.

Q: Is there a fix for CVE-2026-44324?

Yes. github.com/free5gc/udr (Go): upgrade to 1.4.3 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

Q: How is CVE-2026-44324 attacked?

It is attacked over the network, in a software library.

Q: Am I affected by CVE-2026-44324?

Check whether you run free5GC Udr or github.com/free5gc/udr (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.

CVE-2026-44324 · Severity: medium · CVSS 6.5 · Published 2026-05-27

A vulnerability in the free5GC Unified Data Repository (UDR) allows an authenticated user to crash the service's request handler. The UDR is a core component of 5G networks responsible for storing subscriber data. By sending a specific request for a non-existent user, an attacker can cause a service panic, leading to a denial-of-service condition for that specific endpoint.

Technologies: free5GC Udr, github.com/free5gc/udr (Go). Vendors: free5GC, Go.

Quick answers

Is CVE-2026-44324 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-44324 being exploited in the wild.
How severe is CVE-2026-44324?: Medium severity, with a CVSS score of 6.5, published 27 May 2026.
Which products and versions are affected?: free5GC Udr < 1.4.3, <= 4.2.1; github.com/free5gc/udr (Go) < 1.4.3, SEMVER:introduced=0,fixed=1.4.3.
Is there a fix for CVE-2026-44324?: Yes. github.com/free5gc/udr (Go): upgrade to 1.4.3 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-44324 attacked?: It is attacked over the network, in a software library.
Am I affected by CVE-2026-44324?: Check whether you run free5GC Udr or github.com/free5gc/udr (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/udr (Go): upgrade to 1.4.3 or later
```
go get github.com/free5gc/udr@v1.4.3
```

Technical details

The vulnerability is a Go nil interface type assertion (CWE-704) in the RemoveAmfSubscriptionsInfoProcedure of the UDR component. When a DELETE request is made to the amf-subscriptions endpoint with a non-existent ueId, the code correctly identifies the missing user but fails to return early. It subsequently attempts a type assertion on a nil interface returned by sync.Map.Load, causing a panic. While the Gin framework recovers from the panic to prevent a full process crash, the endpoint remains susceptible to repeated authenticated DoS attacks. The issue is fixed in version 1.4.3.

Affected products

free5GC udr < 1.4.3

Identifiers

CVE-2026-44324
GHSA-jqfc-gwj5-3w63
GO-2026-5478

Timeline

2026-03-22: other: Vulnerability validated in lab environment
2026-05-07: disclosed
2026-05-08: advisory
2026-05-27: other: NVD published date

References

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