CVE-2026-42459

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Source

https://cve.org/CVERecord?id=CVE-2026-42459

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-42459.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-42459

Aliases

Published

2026-05-27T15:53:45.452Z

Modified

2026-07-08T08:05:12.550990901Z

Severity

7.7 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:P CVSS Calculator

Summary

free5GC: Improper Input Validation and Generation of Error Message Containing Sensitive Information in github.com/free5gc/udm

Details

free5GC is an open-source implementation of the 5G core network. Prior to 4.2.2, the free5GC UDM component fails to validate the supi path parameter in six GET handlers of the nudm-sdm (Subscriber Data Management) service. An unauthenticated attacker can inject control characters into the SUPI parameter, causing UDM to forward a malformed request to UDR and return a 500 Internal Server Error response that exposes internal infrastructure details. This vulnerability is fixed in 4.2.2.

Database specific

{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/42xxx/CVE-2026-42459.json",
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-20",
        "CWE-209"
    ]
}

References

Affected packages

Git / github.com/free5gc/free5gc

Affected ranges

Type

GIT

Repo

https://github.com/free5gc/free5gc

Events

Introduced

Fixed

8b0f4445fc931638fb624463ce3572a203517679

Database specific

{
    "cpe": "cpe:2.3:a:free5gc:free5gc:*:*:*:*:*:*:*:*",
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "4.2.2"
        }
    ],
    "source": [
        "AFFECTED_FIELD",
        "CPE_RANGE"
    ]
}

Affected versions

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-2026-42459.json"