{"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-2026-54782"],"ecosystem":"NuGet","epss":0.00414,"exploited":false,"fixed_versions":["1.8.1","1.9.1"],"ghsa_id":"GHSA-xjr9-gg9q-jx3v","id":"tcs_01M5N95J1CP80XCMGJ4HFPPHY7","modified_at":"2026-06-19T21:11:28.934937Z","published_at":"2026-06-19T20:47:11Z","references":["https://osv.dev/vulnerability/GHSA-xjr9-gg9q-jx3v","https://github.com/CoreWCF/CoreWCF/security/advisories/GHSA-xjr9-gg9q-jx3v","https://github.com/CoreWCF/CoreWCF"],"severity":{"label":"critical","score":10},"sources":[{"source":"osv","source_id":"GHSA-xjr9-gg9q-jx3v","url":"https://osv.dev/vulnerability/GHSA-xjr9-gg9q-jx3v"}],"summary":"CoreWCF: Authentication bypass in CoreWCF SAML 1.1 / 2.0 token signature validation"}