Wanderer Database Vulnerability in Unauthenticated API Endpoint
CVE-2026-71495

10CRITICAL

Key Information:

Vendor

Open-wanderer

Status
Wanderer
Vendor
CVE Published:
6 November 2026

What is CVE-2026-71495?

The Wanderer database application, prior to version 0.20.0, has a significant vulnerability related to its unauthenticated POST /api/v1/trail/download handler. When the PUBLIC_PRIVATE_INSTANCE configuration is not enabled, an attacker can manipulate the JSON url field sent to event.fetch(). This flaw permits unauthorized access to internal services, including exposure to sensitive data and potential network reconnaissance or denial of service attacks. The issue has been addressed in version 0.20.0.

Affected Version(s)

wanderer < 0.20.0

References

https://github.com/open-wanderer/wanderer/security/adviso...
x_refsource_CONFIRM
https://github.com/open-wanderer/wanderer/pull/1104
x_refsource_MISC
https://github.com/open-wanderer/wanderer/commit/c371337b...
x_refsource_MISC

CVSS V3.1

Score:
10
Severity:
CRITICAL
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.