{"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":0.00538,"exploited":false,"fixed_versions":["1.6.7"],"ghsa_id":"GHSA-7wc2-qxgw-g8gg","id":"tcs_01M5KGXJTF7D7PYK1XR4SG942S","modified_at":"2026-07-13T07:15:15.458932241Z","published_at":"2026-03-06T07:16:01.053Z","references":["https://osv.dev/vulnerability/PYSEC-2026-2118","https://access.redhat.com/security/cve/CVE-2026-28802","https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-28802.json","https://access.redhat.com/errata/RHSA-2026:19375","https://access.redhat.com/errata/RHSA-2026:4942","https://access.redhat.com/errata/RHSA-2026:5168","https://access.redhat.com/errata/RHSA-2026:5665","https://access.redhat.com/errata/RHSA-2026:6309","https://access.redhat.com/errata/RHSA-2026:6568","https://bugzilla.redhat.com/show_bug.cgi?id=2445120","https://github.com/authlib/authlib/commit/a61c2acb807496e67f32051b5f1b1d5ccf8f0a75","https://github.com/authlib/authlib/commit/b87c32ed07b8ae7f805873e1c9cafd1016761df7","https://github.com/authlib/authlib/security/advisories/GHSA-7wc2-qxgw-g8gg"],"severity":{"label":"critical","score":9.8},"sources":[{"source":"osv","source_id":"PYSEC-2026-2118","url":"https://osv.dev/vulnerability/PYSEC-2026-2118"}],"summary":"Authlib is a Python library which builds OAuth and OpenID Connect servers. From version 1.6.5 to before version 1.6.7, previous tests involving passing a malicious JWT containing alg: none and an empt"}