{"id":"PYSEC-2026-1425","summary":"gRPC Reachable Assertion issue","details":"There exists an vulnerability causing an abort() to be called in gRPC. \nThe following headers cause gRPC's C++ implementation to abort() when called via http2:\n\nte: x (x != trailers)\n\n:scheme: x (x != http, https)\n\ngrpclb_client_stats: x (x == anything)\n\nOn top of sending one of those headers, a later header must be sent that gets the total header size past 8KB. We recommend upgrading past git commit 2485fa94bd8a723e5c977d55a3ce10b301b437f8 or v1.53 and above.","aliases":["CVE-2023-1428","GHSA-6628-q6j9-w8vg"],"modified":"2026-07-07T17:46:44.793717221Z","published":"2026-07-07T11:45:20.615704Z","references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-1428"},{"type":"WEB","url":"https://github.com/grpc/grpc/issues/33463"},{"type":"WEB","url":"https://github.com/grpc/grpc/commit/2485fa94bd8a723e5c977d55a3ce10b301b437f8"},{"type":"WEB","url":"https://github.com/rubysec/ruby-advisory-db/blob/master/gems/grpc/CVE-2023-1428.yml"},{"type":"PACKAGE","url":"https://pypi.org/project/grpcio"},{"type":"ADVISORY","url":"https://github.com/advisories/GHSA-6628-q6j9-w8vg"}],"affected":[{"package":{"name":"grpcio","ecosystem":"PyPI","purl":"pkg:pypi/grpcio"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.51.0"},{"fixed":"1.53.0"}]}],"versions":["1.51.0","1.51.1","1.51.3","1.52.0","1.52.0rc1","1.53.0rc2"],"database_specific":{"source":"https://github.com/pypa/advisory-database/blob/main/vulns/grpcio/PYSEC-2026-1425.yaml"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}