{"action":"Upgrade CoreWCF.Primitives to 1.8.1 (1.8.x) or 1.9.1 (1.9.x) or later.","affected":[{"fixed":"1.8.1","introduced":"0"},{"fixed":"1.9.1","introduced":"1.9.0"}],"component":"CoreWCF.Primitives","cve_ids":["CVE-2026-54773"],"ecosystem":"NuGet","epss":0.0037,"exploited":false,"fixed_versions":["1.8.1","1.9.1"],"ghsa_id":"GHSA-jc6x-rj79-w4mx","id":"tcs_01M5N8SCKBHRVPAQEXSKT4BA6M","modified_at":"2026-06-19T21:11:30.211178Z","published_at":"2026-06-19T20:46:43Z","references":["https://osv.dev/vulnerability/GHSA-jc6x-rj79-w4mx","https://github.com/CoreWCF/CoreWCF/security/advisories/GHSA-jc6x-rj79-w4mx","https://github.com/CoreWCF/CoreWCF"],"severity":{"label":"medium","score":5.9},"sources":[{"source":"osv","source_id":"GHSA-jc6x-rj79-w4mx","url":"https://osv.dev/vulnerability/GHSA-jc6x-rj79-w4mx"}],"summary":"CoreWCF: WS-Security signature substitution via document-wide Signature lookup"}