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TI-2026-22170 Aliases CVE-2026-27818GHSA-w789-49fc-v8hr

TerriaJS-Server has a domain validation bypass vulnerability in its proxy allowlist

Priority MEDIUM 43CWE-20Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
—
Confidentiality · integrity · availability
None · High · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0028 20th percentileScored 2026-11-07
Fix Fixed terriajs-server (TerriaJS): 4.0.3terriajs-server (npm): 4.0.3

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
TerriaJSterriajs-serverbefore 4.0.34.0.3Patch availableCNA
—terriajs-server (npm)before 4.0.34.0.3Patch availableGHSA-w789-49fc-v8hr
  • terriajs-server VendorTerriaJS Affected before 4.0.3 Fixed in 4.0.3 Patch available CNA
  • terriajs-server (npm) Vendor— Affected before 4.0.3 Fixed in 4.0.3 Patch available GHSA-w789-49fc-v8hr

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:terria:terriajs-server:*:*:*:*:*:node.js:*:*before 4.0.3VulnerableTerria
  • cpe:2.3:a:terria:terriajs-server:*:*:*:*:*:node.js:*:* Versions before 4.0.3 Vulnerable ·Terria

Remediation

  • Fix · CNA terriajs-server (TerriaJS) Fixed in 4.0.3
  • Fix · GHSA-w789-49fc-v8hr terriajs-server (npm) Fixed in 4.0.3 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-27818
  2. 2026-10-03 Alias added: GHSA-w789-49fc-v8hr

References

Patch 1

Advisory 2

Other 2

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences