Vulnerability details

CVE-2026-71495

open-wanderer wanderer

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

CVSS 3.1

10.0Critical

Official 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.

CVSS scores

Score	Version	Source	Vector
10.0Critical	3.1	CVEProject cvelistV5 (CNA) (GitHub_M)	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:H`

Affected products

Vendor	Product	Versions	Source
open-wanderer	wanderer	< 0.20.0	CVEProject cvelistV5 (CNA)

References and advisories

https://github.com/open-wanderer/wanderer/pull/1104 x_refsource_MISC
https://github.com/open-wanderer/wanderer/commit/c371337b3db1d2895b5cad651046ef0ad4dfc802 x_refsource_MISC
https://github.com/open-wanderer/wanderer/releases/tag/v0.20.0 x_refsource_MISC
https://github.com/open-wanderer/wanderer/security/advisories/GHSA-7vqq-mjjr-h9j5 x_refsource_CONFIRM

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Details

Published: 2026-11-06
Last updated: 2026-11-09
State: Published
Assigner (CNA): GitHub_M
Kolun priority: 22 · Low

Exploit prediction (EPSS)

0.33%

Probability of exploitation in 30 days

27.1%

Percentile (among all CVEs)

SSVC assessment (CISA)

Automatable: Yes
Exploitation: Proof of concept
Technical impact: Total

Weaknesses (CWE)

CWE-918
Server-Side Request Forgery (SSRF)