{"action":"Upgrade signalk-server to 2.24.0 or later.","affected":[{"fixed":"2.24.0","introduced":"2.20.0"}],"component":"signalk-server","cve_ids":["CVE-2026-34083"],"ecosystem":"npm","epss":0.00116,"exploited":false,"fixed_versions":["2.24.0"],"ghsa_id":"GHSA-cxj8-ggf2-p57c","id":"tcs_01M5KFKX6R9GEHJ4Q2N12HW4VE","modified_at":"2026-04-03T21:56:24.398471Z","published_at":"2026-04-03T21:43:22Z","references":["https://osv.dev/vulnerability/GHSA-cxj8-ggf2-p57c","https://github.com/SignalK/signalk-server/security/advisories/GHSA-cxj8-ggf2-p57c","https://nvd.nist.gov/vuln/detail/CVE-2026-34083","https://github.com/SignalK/signalk-server","https://github.com/SignalK/signalk-server/releases/tag/v2.24.0"],"severity":{"label":"medium","score":6.1},"sources":[{"source":"osv","source_id":"GHSA-cxj8-ggf2-p57c","url":"https://osv.dev/vulnerability/GHSA-cxj8-ggf2-p57c"}],"summary":"Signal K Server: OAuth Authorization Code Theft via Unvalidated Host Header in OIDC Flow"}