{"id":"CVE-2021-36154","details":"HTTP2ToRawGRPCServerCodec in gRPC Swift 1.1.1 and earlier allows remote attackers to deny service via the delivery of many small messages within a single HTTP/2 frame, leading to Uncontrolled Recursion and stack consumption.","aliases":["GHSA-4rhq-vq24-88gw"],"modified":"2026-07-09T10:01:23.984467Z","published":"2021-07-09T12:15:08.097Z","references":[{"type":"ADVISORY","url":"https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=35274"},{"type":"ADVISORY","url":"https://github.com/grpc/grpc-swift/releases"},{"type":"ADVISORY","url":"https://github.com/grpc/grpc-swift/security/advisories/GHSA-4rhq-vq24-88gw"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/grpc/grpc-swift","events":[{"introduced":"9e464a75079928366aa7041769a271fac89271bf"},{"last_affected":"276f09147d914b6463f3ccdd39f51f7e0dd15aaa"}],"database_specific":{"source":"CPE_STRING","cpe":["cpe:2.3:a:linuxfoundation:grpc_swift:1.0.0:*:*:*:*:*:*:*","cpe:2.3:a:linuxfoundation:grpc_swift:1.1.0:*:*:*:*:*:*:*","cpe:2.3:a:linuxfoundation:grpc_swift:1.1.1:*:*:*:*:*:*:*"],"extracted_events":[{"introduced":"1.0.0"},{"last_affected":"1.0.0"},{"introduced":"1.1.0"},{"last_affected":"1.1.0"},{"introduced":"1.1.1"},{"last_affected":"1.1.1"}]}}],"versions":["1.0.0","1.1.0","1.1.1"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-36154.json"}}],"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"}]}