{"action":"Upgrade authlib to 1.6.7 or later.","affected":[{"fixed":"1.6.7","introduced":"1.6.5"}],"component":"authlib","cve_ids":["CVE-2026-28802"],"ecosystem":"PyPI","epss":0.00503,"exploited":false,"fixed_versions":["1.6.7"],"ghsa_id":"GHSA-7wc2-qxgw-g8gg","id":"tcs_01M5KF6PTPTHVNV4PJTJ1S7JWN","modified_at":"2026-09-10T03:50:38.043438200Z","published_at":"2026-03-04T20:55:47Z","references":["https://osv.dev/vulnerability/GHSA-7wc2-qxgw-g8gg","https://github.com/authlib/authlib/security/advisories/GHSA-7wc2-qxgw-g8gg","https://nvd.nist.gov/vuln/detail/CVE-2026-28802","https://github.com/authlib/authlib/commit/a61c2acb807496e67f32051b5f1b1d5ccf8f0a75","https://github.com/authlib/authlib/commit/b87c32ed07b8ae7f805873e1c9cafd1016761df7","https://github.com/authlib/authlib"],"severity":{"label":"high"},"sources":[{"source":"osv","source_id":"GHSA-7wc2-qxgw-g8gg","url":"https://osv.dev/vulnerability/GHSA-7wc2-qxgw-g8gg"}],"summary":"Authlib: Setting `alg: none` and a blank signature appears to bypass signature verification"}