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CVE-2026-27818

HIGH CVSS 4.0: 8.7 EPSS 0.10%
Updated Feb 26, 2026
Node.Js
Parameter Value
CVSS 8.7 (HIGH)
Affected Versions before 4.0.3
Type CWE-918 (Server-Side Request Forgery (SSRF)), CWE-20 (Improper Input Validation)
Vendor Node.Js
Public PoC No

TerriaJS-Server is a NodeJS Express server for TerriaJS, a library for building web-based geospatial data explorers. A validation bug in versions prior to 4.0.3 allows an attacker to proxy domains not explicitly allowed in the `proxyableDomains` configuration. Version 4.0.3 fixes the issue.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
None
No data leak
Integrity
High
Complete data modification
Availability
None
No disruption

CVSS Vector v4.0