Denial of Service Vulnerability in Open5GS by Open5GS
CVE-2026-8730

5.3MEDIUM

Key Information:

Vendor

Open5GS

Status
Open5gs
Vendor
CVE Published:
17 May 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-8730?

A vulnerability exists in Open5GS, specifically in the ogs_sbi_nf_instance_set_id function located in the /lib/sbi/context.c file of the NRF component. This flaw allows for remote exploitation by manipulating the nfInstanceId argument, potentially leading to a denial of service condition. Although the Open5GS project was notified of this issue through an issue report, a response has not been provided. Users of Open5GS up to version 2.7.6 should review their security measures to mitigate the risks associated with this vulnerability.

Affected Version(s)

Open5GS 2.7.0

Open5GS 2.7.1

Open5GS 2.7.2

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-8730 - Proof of Concept

References

https://vuldb.com/vuln/364319
vdb-entrytechnical-description
https://vuldb.com/vuln/364319/cti
signaturepermissions-required
https://vuldb.com/submit/808514
third-party-advisory

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

LinJu (VulDB User)
VulDB CNA Team
.