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.
History

Mon, 30 Jun 2025 12:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Mon, 30 Jun 2025 11:00:00 +0000

Type Values Removed Values Added
Description 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.
Title Host Header Injection (HHI) in the Hotspot Shield VPN client
Weaknesses CWE-74
References
Metrics cvssV4_0

{'score': 2.3, 'vector': 'CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:L/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: INCIBE

Published: 2025-06-30T10:37:05.241Z

Updated: 2025-06-30T11:15:43.105Z

Reserved: 2025-04-16T08:38:19.332Z

Link: CVE-2025-40710

cve-icon Vulnrichment

Updated: 2025-06-30T11:15:28.735Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2025-06-30T11:15:25.690

Modified: 2025-06-30T18:38:23.493

Link: CVE-2025-40710

cve-icon Redhat

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