{"id":"CVE-2025-66398","summary":"Signal K Server has Unauthenticated State Pollution leading to Remote Code Execution (RCE)","details":"Signal K Server is a server application that runs on a central hub in a boat. Prior to version 2.19.0, an unauthenticated attacker can pollute the internal state (`restoreFilePath`) of the server via the `/skServer/validateBackup` endpoint. This allows the attacker to hijack the administrator's \"Restore\" functionality to overwrite critical server configuration files (e.g., `security.json`, `package.json`), leading to account takeover and Remote Code Execution (RCE). Version 2.19.0 patches this vulnerability.","aliases":["GHSA-w3x5-7c4c-66p9"],"modified":"2026-08-12T03:51:16.377480972Z","published":"2026-01-01T18:00:38.575Z","database_specific":{"cna_assigner":"GitHub_M","cwe_ids":["CWE-78","CWE-913"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/66xxx/CVE-2025-66398.json"},"references":[{"type":"WEB","url":"https://github.com/SignalK/signalk-server/releases/tag/v2.19.0"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/66xxx/CVE-2025-66398.json"},{"type":"ADVISORY","url":"https://github.com/SignalK/signalk-server/security/advisories/GHSA-w3x5-7c4c-66p9"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-66398"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/signalk/signalk-server","events":[{"introduced":"0"},{"fixed":"3037c517bb8de70c4b74b61192c57d6176731571"}],"database_specific":{"cpe":"cpe:2.3:a:signalk:signal_k_server:*:*:*:*:*:*:*:*","extracted_events":[{"introduced":"0"},{"fixed":"2.19.0"}],"source":["AFFECTED_FIELD","CPE_RANGE","REFERENCES"]}}],"versions":["v2.19.0-beta.5","v2.19.0-beta.4","v2.19.0-beta.3","v2.19.0-beta.2","v2.19.0-beta.1","v2.18.0","v2.17.2","v2.17.1","v2.17.0","v2.16.0","v2.15.3","v2.15.2","v2.15.1","v2.15.0","v2.15.0-beta.6","v2.15.0-beta.5","v2.14.4","v2.14.3","v2.14.2","v2.14.1","v2.14.0","v2.14.0-beta.1","v2.14.0-beta.0","v2.13.5","v2.13.4","v2.13.3","v2.13.2","v2.13.1","v2.13.0","v2.13.0-beta.3","v2.13.0-beta.2","v2.13.0-beta.1","v2.13.0-beta.0","v2.12.0","v2.11.0","v2.10.0","v2.9.0","v2.8.3","v2.8.2","v2.8.1","v2.8.0","v2.7.2","v2.7.1","v2.7.0","v2.6.2","v2.6.1","v2.6.0","v2.5.0","v2.4.1","v2.3.1","v2.3.0","v2.2.0","v2.1.1","v2.1.0","v2.0.0","v2.0.0-beta.12","v2.0.0-beta.11","v2.0.0-beta.10","v2.0.0-beta.9","v2.0.0-beta.8","v2.0.0-beta.7","v2.0.0-beta.6","v2.0.0-beta.5","v2.0.0-beta.4","v2.0.0-beta.3","v2.0.0-beta.2","v1.46.3","v1.46.2","v1.46.1","v1.46.0","v1.45.0","v1.44.0","latest","v1.43.0","v1.42.0","v1.41.3","v1.41.2","v1.41.1","v1.41.0","v1.41.0-beta.4","v1.41.0-beta.3","v1.41.0-beta.2","v1.41.0-beta.1","v1.40.0","v1.39.0","v1.38.1","v1.38.0","v1.37.6","v1.37.5","v1.37.4","v1.37.3","v1.37.2","v1.37.1","v1.37.0","v1.37.0-beta.3","v1.37.0-beta.1","v1.36.0","v1.36.0-beta.3","v1.36.0-beta.2","v1.36.0-beta.1","v1.35.2","v1.35.1","v1.35.0","v1.34.0","v1.33.0","v1.33.0-beta.1","v1.32.0","v1.32.0-beta.3","v1.32.0-beta.2","v1.32.0-beta.1","v1.31.0","v1.30.0","v1.29.0","v1.28.0","v1.27.1","v1.27.0","v1.26.0","v1.25.0","v1.24.0","v1.23.0","v1.22.0","v1.21.0","v1.20.0","v1.19.0","v1.19.0-beta.2","v1.18.0","v1.17.0","v1.16.0","v1.15.0","v1.14.0","v1.13.1","v1.12.0","v1.13.0","v1.10.2","v1.10.1","v1.10.0","v1.9.1","v1.9.0","v1.8.0","v1.7.1","v1.7.0","v1.6.0","v1.5.0","v1.4.3","v1.4.2","v1.4.1","v1.4.0","v1.3.0","v1.2.4","v1.2.3","v1.2.2","v1.2.1","v1.2.0","v1.1.2","v1.1.1","v1.1.0","v1.0.0","v1.0.0-4","v1.0.0-3","v1.0.0-2","v1.0.0-1","v1.0.0-0","v0.1.33","v0.1.30","v0.1.29","v0.1.28","v0.1.27","v0.1.26","v0.1.24","0.1.19","0.1.12","0.1.11","0.1.10","0.1.9","0.1.8","0.1.7","0.1.6","0.1.5","0.1.4","0.1.3","0.1.2","0.1.1"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-66398.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H"}]}