{"id":"CVE-2023-1428","aliases":["GHSA-6628-q6j9-w8vg","PYSEC-2026-1425"],"url":"https://o3.security/vulnerability/CVE-2023-1428","summary":"Denial-of-Service in gRPC","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.\n\n","published":"2023-06-09T10:46:54.244Z","modified":"2026-08-12T13:33:52.219750Z","cvss":{"score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},"epss":{"score":0.00412,"percentile":0.34892,"asOf":"2026-09-16"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Maven","name":"io.grpc:grpc-protobuf","fixedVersion":"1.53.0"},{"ecosystem":"PyPI","name":"grpcio","fixedVersion":"1.53.0"},{"ecosystem":"RubyGems","name":"grpc","fixedVersion":"1.53.0"}],"fix":{"url":"https://github.com/grpc/grpc/commit/2485fa94bd8a723e5c977d55a3ce10b301b437f8","label":"grpc/grpc@2485fa9"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/1xxx/CVE-2023-1428.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-1428"},{"type":"FIX","url":"https://github.com/grpc/grpc/commit/2485fa94bd8a723e5c977d55a3ce10b301b437f8"},{"type":"PACKAGE","url":"https://github.com/grpc/grpc"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T13:33:52.219750Z"}}