Denial of Service Vulnerability in Open5GS NRF Component
CVE-2026-8291

5.3MEDIUM

Key Information:

Vendor

Open5GS

Status
Open5gs
Vendor
CVE Published:
11 May 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-8291?

A vulnerability has been discovered in Open5GS versions up to 2.7.7, specifically within the ogs_nnrf_nfm_handle_nf_profile function in the NRF component's lib/sbi/nnrf-handler.c file. This issue allows for a remote attacker to cause a denial of service, potentially disrupting service availability. Publicly available exploits for this vulnerability may increase the risk of successful attacks. A pull request to address and fix this issue is currently pending acceptance.

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-2026-8291 - Proof of Concept

References

https://vuldb.com/vuln/362588
vdb-entrytechnical-description
https://vuldb.com/vuln/362588/cti
signaturepermissions-required
https://vuldb.com/submit/808508
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
.