CVE-2026-71495 – Wanderer: SSRF Vulnerability in /api/v1/trail/download – Unvalidated URL Leads to Internal Network Access

​CVE ID :CVE-2026-71495

Published : Nov. 6, 2026, 7:17 p.m. | 19 minutes ago

Description :Wanderer is a self-hosted trail database for saving and sharing adventures. Prior to 0.20.0, when PUBLIC_PRIVATE_INSTANCE is not set to true, the unauthenticated POST /api/v1/trail/download handler passes the attacker-controlled JSON url field directly to event.fetch() and returns the fetched response. This allows requests to internal services such as db:8090 and search:7700, cloud metadata addresses, and other network destinations, exposing returned data and permitting internal network reconnaissance or denial of service. This issue is fixed in version 0.20.0.

Severity: 10.0 | CRITICAL

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