What’s Vulnerable › Vulnerabilities

CVE-2026-24902: TrustTunnel has SSRF and private network restriction bypass via numeric address destinations

• Severity: high (CVSS 7.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-01-29 · updated 2026-06-17
• Weakness: CWE-918

Description

TrustTunnel is an open-source VPN protocol with a server-side request forgery and and private network restriction bypass in versions prior to 0.9.114. In `tcp_forwarder.rs`, SSRF protection for `allow_private_network_connections = false` was only applied in the `TcpDestination::HostName(peer)` path. The `TcpDestination::Address(peer) => peer` path proceeded to `TcpStream::connect()` without equivalent checks (for example `is_global_ip`, `is_loopback`), allowing loopback/private targets to be reached by supplying a numeric IP. The vulnerability is fixed in version 0.9.114.

Affected products

• TrustTunnel: before 0.9.114 — fixed in 0.9.114

How to fix

Upgrade to a fixed version: TrustTunnel 0.9.114. Check the vendor advisory for mitigations.

References

• https://github.com/TrustTunnel/TrustTunnel/commit/734bb5cf103b72390a95c853cbf91e699cc01bc0
• https://github.com/TrustTunnel/TrustTunnel/security/advisories/GHSA-hgr9-frvw-5r76

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