TI-2018-00394 Aliases CVE-2018-0435 GHSA-6frj-jhq2-gcfc

Cisco Umbrella API Unauthorized Access Vulnerability

MEDIUM 41CWE-287Published 2018-10-05 · Updated 2024-11-26

Key facts

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

Attack profile from CVSS 3.0 · NVD. Fix status from CNA. Impact type from CWE-287.

Summary

A vulnerability in the Cisco Umbrella API could allow an authenticated, remote attacker to view and modify data across their organization and other organizations. The vulnerability is due to insufficient authentication configurations for the API interface of Cisco Umbrella. An attacker could exploit this vulnerability to view and potentially modify data for their organization or other organizations. A successful exploit could allow the attacker to read or modify data across multiple organizations.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.01094 65th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

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

Cisco Umbrella VendorCisco Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:cisco:umbrella::::::::	all versions	Vulnerable	Cisco

cpe:2.3:a:cisco:umbrella:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·Cisco

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2018-0435
2026-10-03 Alias added: GHSA-6frj-jhq2-gcfc

References

Advisory 1

20180905 Cisco Umbrella API Unauthorized Access Vulnerability

TI-2019-01430 Cisco Umbrella Dashboard Session Management Vulnerability CVSS 3.0HIGH 8.8
TI-2021-01201 Cisco Umbrella Link and CSV Formula Injection Vulnerabilities CVSS 3.1HIGH 8.6
TI-2021-01077 Cisco Umbrella Dashboard Packet Flood Vulnerability CVSS 3.1MEDIUM 5.3
TI-2021-01202 Cisco Umbrella Link and CSV Formula Injection Vulnerabilities CVSS 3.1MEDIUM 6.5
TI-2019-01417 Cisco Umbrella Cross-Site Scripting Vulnerability CVSS 3.1MEDIUM 6.1
TI-2020-02889 Cisco Umbrella Open Redirect Vulnerability CVSS 3.1MEDIUM 6.1

See all 9 →

Sources

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