{"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-2026-54783"],"ecosystem":"NuGet","epss":0.00193,"exploited":false,"fixed_versions":["1.8.1","1.9.1"],"ghsa_id":"GHSA-gqv6-pwcg-87r8","id":"tcs_01M5N8PKF5FX2NJ06DCHX3ZH21","modified_at":"2026-06-19T21:11:29.618702Z","published_at":"2026-06-19T20:47:14Z","references":["https://osv.dev/vulnerability/GHSA-gqv6-pwcg-87r8","https://github.com/CoreWCF/CoreWCF/security/advisories/GHSA-gqv6-pwcg-87r8","https://github.com/CoreWCF/CoreWCF"],"severity":{"label":"high","score":7.4},"sources":[{"source":"osv","source_id":"GHSA-gqv6-pwcg-87r8","url":"https://osv.dev/vulnerability/GHSA-gqv6-pwcg-87r8"}],"summary":"CoreWCF: XML Signature Wrapping in WS-Security endorsing/supporting signature verification allows replay of captured signed messages"}