CVE-2026-44319

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Source
https://cve.org/CVERecord?id=CVE-2026-44319
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-44319.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-44319
Aliases
Downstream
Related
Published
2026-05-27T15:49:20.934Z
Modified
2026-08-12T03:51:40.264522511Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
free5GC: NEF crashes via logger.Fatal on PFD notification delivery failure (attacker-controlled notifyUri)
Details

free5GC is an open-source implementation of the 5G core network. Prior to 4.2.2, free5GC's NEF terminates the entire process when a stored PFD-subscription notifyUri cannot be reached. In PfdChangeNotifier.FlushNotifications(), the notifier calls NnefPFDmanagementNotify(...) and on any delivery error invokes logger.PFDManageLog.Fatal(err), which is os.Exit(1)-equivalent in Go. An attacker who can create a PFD subscription with an attacker-chosen notifyUri and then trigger a PFD change can deterministically kill NEF on the asynchronous delivery attempt -- the process exits with status 1, dropping NEF's entire SBI surface until restart. This vulnerability is fixed in 4.2.2.

Database specific 
{
    "cwe_ids": [
        "CWE-20",
        "CWE-617",
        "CWE-755"
    ],
    "cna_assigner": "GitHub_M",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/44xxx/CVE-2026-44319.json"
}
References

Affected packages

Git / github.com/free5gc/free5gc

Affected ranges

Type
GIT
Repo
https://github.com/free5gc/free5gc
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
8b0f4445fc931638fb624463ce3572a203517679
Database specific
Show details 
{
    "source": [
        "AFFECTED_FIELD",
        "CPE_RANGE"
    ],
    "cpe": "cpe:2.3:a:free5gc:free5gc:*:*:*:*:*:*:*:*",
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "4.2.2"
        }
    ]
}
Type
GIT
Repo
https://github.com/free5gc/nef
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
f110517b1189801950b50668a593398687049074
Database specific
Show details 
{
    "source": "REFERENCES"
}

Affected versions

v1.*
v1.0.0
v1.0.1
v1.0.2
v1.1.0
v1.2.0
v1.2.1
v1.2.2
v3.*
v3.0.5
v3.0.6
v3.0.7
v3.1.0
v3.1.1
v3.2.0
v3.2.1
v3.3.0
v3.4.0
v3.4.1
v3.4.2
v3.4.3
v3.4.4
v3.4.5
v4.*
v4.0.0
v4.0.1
v4.1.0
v4.2.0
v4.2.1

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-44319.json"