{"action":"Upgrade github.com/dadrus/heimdall to 0.17.17 or later.","affected":[{"fixed":"0.17.17","introduced":"0"}],"component":"github.com/dadrus/heimdall","cve_ids":["CVE-2026-57209"],"ecosystem":"Go","exploited":false,"fixed_versions":["0.17.17"],"ghsa_id":"GHSA-4jgr-pg2m-m988","id":"tcs_01M5KEWSZGS5BXVDHBN2TMBZMR","modified_at":"2026-07-20T21:56:16.566999339Z","published_at":"2026-06-18T14:24:41Z","references":["https://osv.dev/vulnerability/GHSA-4jgr-pg2m-m988","https://github.com/dadrus/heimdall/security/advisories/GHSA-4jgr-pg2m-m988","https://github.com/dadrus/heimdall"],"severity":{"label":"high"},"sources":[{"source":"osv","source_id":"GHSA-4jgr-pg2m-m988","url":"https://osv.dev/vulnerability/GHSA-4jgr-pg2m-m988"}],"summary":"Heimdall: Forwarded Header Injection via Unsanitized Host Header in Proxy Mode"}