Denial of Service Vulnerability in Open5GS by Open5GS Project
CVE-2026-8289

5.3MEDIUM

Key Information:

Vendor

Open5GS Project

Status
Open5gs
Vendor
CVE Published:
11 May 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-8289?

A vulnerability in Open5GS affects the SMF component, particularly the smf_nsmf_handle_update_data_in_vsmf function. This vulnerability arises from improper handling of the qosFlowProfile argument, leading to potential denial of service attacks. The exploitation can be conducted remotely, and publicly available exploits may pose risks to systems running Open5GS up to version 2.7.7. Despite being reported early, there has been no response from the Open5GS project team regarding this issue.

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-2026-8289 - Proof of Concept

References

https://vuldb.com/vuln/362586
vdb-entrytechnical-description
https://vuldb.com/vuln/362586/cti
signaturepermissions-required
https://vuldb.com/submit/808490
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

FrankLin (VulDB User)
VulDB CNA Team
.