Denial of Service Vulnerability in Open5GS NSSF Component
CVE-2026-8122

5.3MEDIUM

Key Information:

Vendor

Open5GS

Status
Open5gs
Vendor
CVE Published:
8 May 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-8122?

A vulnerability has been identified in the Open5GS project, specifically within the NSSF component where the function ogs_sbi_discovery_option_add_service_names is located. This flaw can lead to a denial of service (DoS), allowing remote attackers to exploit the situation. Although the issue was reported to the developers prior to public disclosure, there has been no responsive action taken. Users of Open5GS versions up to 2.7.7 are at risk and should take this threat seriously.

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-2026-8122 - Proof of Concept

References

https://vuldb.com/vuln/361909
vdb-entrytechnical-description
https://vuldb.com/vuln/361909/cti
signaturepermissions-required
https://vuldb.com/submit/808425
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

LinZiyu (VulDB User)
VulDB CNA Team
.