{"id":"CVE-2026-27818","summary":"TerriaJS-Server has a domain validation bypass vulnerability in its proxy allowlist","details":"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.","aliases":["GHSA-w789-49fc-v8hr"],"modified":"2026-04-10T05:38:40.599919Z","published":"2026-02-26T00:02:45.127Z","database_specific":{"cwe_ids":["CWE-20","CWE-918"],"cna_assigner":"GitHub_M","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/27xxx/CVE-2026-27818.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/27xxx/CVE-2026-27818.json"},{"type":"ADVISORY","url":"https://github.com/TerriaJS/terriajs-server/security/advisories/GHSA-w789-49fc-v8hr"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-27818"},{"type":"FIX","url":"https://github.com/TerriaJS/terriajs-server/commit/3aaa5d9717162b245ae4569232bbe7d8673c913f"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/terriajs/terriajs-server","events":[{"introduced":"0"},{"fixed":"2689f9966c59bc28f9c4d27c49b4fd06a097dfc4"}]}],"versions":["0.0.8","1.0.0","1.1.0","1.1.1","1.1.2","1.1.3","1.2.0","1.3.0","1.4.0","1.4.1","2.0.0","2.1.0","2.2.0","2.2.1","2.2.2","2.3.0","2.4.0","2.5.0","2.5.1","2.6.0","2.6.1","2.6.2","2.6.3","2.6.4","2.6.5","2.6.6","2.6.7","2.7.0","2.7.1","2.7.2","2.7.3","2.8.0","2.9.0","2.9.1","2.9.2","3.0.0","3.0.1","3.1.0","3.2.0","3.3.0","3.3.1","3.3.3","3.3.4","4.0.0","4.0.1","4.0.2","v1.1.1","v1.1.2","v1.1.3","v1.2.0","v1.3.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-27818.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V4","score":"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"}]}