CVE-2026-27818
High
Description
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.
SeverityHigh
CVSS7.5
Exploit probability—
ProductTerriajs-server
PublishedFeb 26, 2026
First seenFeb 26, 2026
How to fix
Update
- terria terriajs-server4.0.3 or later
- terriajs-server4.0.3 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| terria terriajs-server | v < 4.0.3 | 4.0.3 |
| terriajs-servernpm | v < 4.0.3 | 4.0.3 |
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