{"action":"No fix published. Pin and monitor.","affected":[{"introduced":"0"}],"component":"github.com/coder/coder","cve_ids":["CVE-2026-55430"],"ecosystem":"Go","epss":0.00208,"exploited":false,"fixed_versions":[],"ghsa_id":"GHSA-5g4w-3vw9-478w","id":"tcs_01M5KGQQFK03XBR1XKX5ZKN3EK","modified_at":"2026-07-07T20:30:17.637359700Z","published_at":"2026-07-07T16:41:46Z","references":["https://osv.dev/vulnerability/GO-2026-5917","https://github.com/coder/coder/security/advisories/GHSA-5g4w-3vw9-478w","https://github.com/coder/coder/pull/26204"],"severity":{"label":"medium","score":6.8},"sources":[{"source":"osv","source_id":"GO-2026-5917","url":"https://osv.dev/vulnerability/GO-2026-5917"},{"source":"nvd","source_id":"CVE-2026-55430","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-55430"}],"summary":"Coder's subdomain workspace app routing trusts unauthenticated X-Forwarded-Host header, enabling cross-app data access in github.com/coder/coder"}