CVE-2025-40710

Host Header Injection (HHI) vulnerability in the Hotspot Shield VPN client, which can induce unexpected behaviour when accessing third-party web applications through the VPN tunnel. Although such applications do not present this vulnerability per se, the use of the tunnel, together with a forged Host header, can cause the VPN client to redirect or forward HTTP requests to servers other than those originally intended, leading to consequences such as open redirects or delivery of traffic to infrastructure controlled by an attacker. This does not imply a flaw in the target applications, but in how the VPN client internally handles outgoing headers and requests.

CVSS

No CVSS.

References

Link	Resource
https://www.incibe.es/en/incibe-cert/notices/aviso/host-header-injection-hhi-hotspot-shield-vpn-client

Configurations

No configuration.

History

30 Jun 2025, 11:15

Type	Values Removed	Values Added
New CVE

Information

Published : 2025-06-30 11:15

Updated : 2025-06-30 18:38

NVD link : CVE-2025-40710

Mitre link : CVE-2025-40710

CVE.ORG link : CVE-2025-40710

JSON object : View

Products Affected

No product.

CWE

CWE-74

Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')

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