CVE-2026-27818 HIGH

CVE-2026-27818: TerriaJS-Server has a domain validation bypass vulnerability in its proxy allowlist

Vendor Terriajs
Product terriajs-server
Weakness CWE-20 · Input validation
Published February 26, 2026
Last update February 26, 2026
View on NVD All CVEs

CVSS base score

8.7/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality —
Integrity —

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

February 26, 2026 CVE published
February 26, 2026 Record updated