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

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-71495
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-11-06 19:17:56 UTC
Updated2026-11-12 22:18:51 UTC
DescriptionWanderer 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.

Risk And Classification

Primary CVSS: v3.1 10 CRITICAL from [email protected]

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:H

EPSS: 0.003360000 probability, percentile 0.273750000 (date 2026-11-12)

Problem Types: CWE-918 | CWE-918 CWE-918: Server-Side Request Forgery (SSRF)

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary10CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:H
3.1CNADECLARED10CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
None
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:H

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Open-wanderer Wanderer affected < 0.20.0 Not specified

References

ReferenceSourceLinkTags
github.com/open-wanderer/wanderer/releases/tag/v0.20.0 [email protected] github.com
github.com/open-wanderer/wanderer/pull/1104 [email protected] github.com
github.com/open-wanderer/wanderer/commit/c371337b3db1d2895b5cad651046ef0... [email protected] github.com
github.com/open-wanderer/wanderer/security/advisories/GHSA-7vqq-mjjr-h9j5 134c704f-9b21-4f2e-91b3-4a467353bcc0 github.com
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