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Vulnerabilities

Vulnerability · CVE-2026-27818

TerriaJS-Server is a NodeJS Express server for TerriaJS, a library for building web-based geospatial data explorers.

Published Feb 26, 2026 · catalog updated Jun 17, 2026 · TerriaJS-Server is a NodeJS

Check if you run it

No confirmed exploitation is on record for CVE-2026-27818. EPSS is 0.42%. Act only if a listed version of TerriaJS-Server is a NodeJS is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (TerriaJS-Server is a NodeJS).
  • No version range is stored. A customer cannot check an installed version against this record.
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High8.7
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.42%
Remediation
Advisory link
Affected products
cpe terria/terriajs-server

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 configuration. Version 4.0.3 fixes the issue.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe terria/terriajs-serverversion unspecified

How to fix CVE-2026-27818

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-27818. EPSS is 0.42%. Act only if a listed version of TerriaJS-Server is a NodeJS is installed.

Which versions are affected?

Affected version ranges are not on this record. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-20: Improper Input Validation; CWE-918: Server-Side Request Forgery (SSRF). EPSS 0.42%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Feb 26, 2026 · NIST NVD

    Detected

    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 configuration. Version 4.0.3 fixes the issue.

  2. Jun 17, 2026 · NIST NVD

    Updated

    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 configuration. Version 4.0.3 fixes the issue.

Sources

  • CVE.orgVulnerability recordCVE-2026-27818

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-27818

    30-day exploitation probability 0.4%

    first.org
  • NIST NVDVulnerability recordCVE-2026-27818

    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 configuration. Version 4.0.3 fixes

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.