TI-2021-09356 Aliases CVE-2021-28122 GHSA-66wx-wcfh-hv4g

A request-validation issue was discovered in Open5GS 2.1.3 through 2.2.x before 2.2.1.

MEDIUM 49CWE-306Published 2021-03-10 · Updated 2024-08-03

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Security bypass
Confidentiality · integrity · availability: High · High · High
Fix status: No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-306.

Summary

A request-validation issue was discovered in Open5GS 2.1.3 through 2.2.x before 2.2.1. The WebUI component allows an unauthenticated user to use a crafted HTTP API request to create, read, update, or delete entries in the subscriber database. For example, new administrative users can be added. The issue occurs because Express is not set up to require authentication.

Why it matters now

EPSS 0.03962 90th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	—	all versions	—	No fix listed	CNA

— Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:open5gs:open5gs::::::::	2.1.3 – 2.2.0	Vulnerable	Open5GS

cpe:2.3:a:open5gs:open5gs:*:*:*:*:*:*:*:* Versions 2.1.3 – 2.2.0 Vulnerable ·Open5GS

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2021-28122
2026-10-03 Alias added: GHSA-66wx-wcfh-hv4g

References

Exploit 1

https://github.com/open5gs/open5gs/issues/837

Patch 2

Advisory 1

https://github.com/open5gs/open5gs/releases

TI-2024-26883 open5gs v2.6.4 is vulnerable to Buffer Overflow. CVSS 3.1CRITICAL 9.8
TI-2024-26882 Open5GS v2.6.4 is vulnerable to Buffer Overflow. CVSS 3.1CRITICAL 9.8
TI-2024-22649 Open5GS MME versions <= 2.6.4 contains an assertion that can be remotely triggered via a… CVSS 3.1HIGH 8.6
TI-2023-18757 Open5GS MME versions <= 2.6.4 contain a reachable assertion in the `Uplink NAS Transport`… CVSS 3.1HIGH 8.6
TI-2023-18755 Open5GS MME version <= 2.6.4 contains an assertion that can be remotely triggered via a… CVSS 3.1HIGH 8.6
TI-2023-18754 Open5GS MME versions <= 2.6.4 contain an assertion that can be remotely triggered via a… CVSS 3.1HIGH 8.6

See all 153 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences