{"id":"UBUNTU-CVE-2026-45799","details":"Wire provides gRPC and protocol buffers for Android, Kotlin, Swift, and Java. Prior to 6.3.0 and 7.0.0-alpha03, ByteArrayProtoReader32.skipGroup() and ProtoReader.skipGroup() in wire-runtime do not validate that a LENGTH_DELIMITED field length is non-negative before skip(), allowing a crafted protobuf varint encoding -128 as a signed Int to make skip(-128) move the internal position negative and make the next readByte() throw ArrayIndexOutOfBoundsException instead of the documented IOException or ProtocolException, which can crash services using ProtoAdapter.decode(byte[]) on untrusted payloads. This issue is fixed in versions 6.3.0 and 7.0.0-alpha03.","modified":"2026-07-29T10:18:49.429945861Z","published":"2026-07-17T20:17:00Z","upstream":["CVE-2026-45799"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-45799"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-45799"}],"affected":[{"package":{"name":"grpc","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/grpc?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.10.2-1","0.11.1-1"],"ecosystem_specific":{"binaries":[{"binary_name":"libgrpc0","binary_version":"0.11.1-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-45799.json"}},{"package":{"name":"grpc","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/grpc?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.3.2-1","1.3.2-1ubuntu1","1.3.2-1.1~build1"],"ecosystem_specific":{"binaries":[{"binary_name":"libgrpc++1","binary_version":"1.3.2-1.1~build1"},{"binary_name":"libgrpc3","binary_version":"1.3.2-1.1~build1"},{"binary_name":"protobuf-compiler-grpc","binary_version":"1.3.2-1.1~build1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-45799.json"}},{"package":{"name":"grpc","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/grpc?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.16.1-1","1.16.1-1ubuntu1","1.16.1-1ubuntu3","1.16.1-1ubuntu4","1.16.1-1ubuntu5"],"ecosystem_specific":{"binaries":[{"binary_name":"libgrpc++1","binary_version":"1.16.1-1ubuntu5"},{"binary_name":"libgrpc6","binary_version":"1.16.1-1ubuntu5"},{"binary_version":"1.16.1-1ubuntu5","binary_name":"protobuf-compiler-grpc"},{"binary_name":"python3-grpcio","binary_version":"1.16.1-1ubuntu5"},{"binary_version":"1.16.1-1ubuntu5","binary_name":"ruby-grpc"},{"binary_version":"1.16.1-1ubuntu5","binary_name":"ruby-grpc-tools"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-45799.json"}},{"package":{"name":"grpc","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/grpc?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.30.2-3","1.30.2-3build1","1.30.2-3build3","1.30.2-3build5","1.30.2-3build6"],"ecosystem_specific":{"binaries":[{"binary_version":"1.30.2-3build6","binary_name":"libgrpc++1"},{"binary_name":"libgrpc10","binary_version":"1.30.2-3build6"},{"binary_name":"protobuf-compiler-grpc","binary_version":"1.30.2-3build6"},{"binary_name":"python3-grpcio","binary_version":"1.30.2-3build6"},{"binary_name":"ruby-grpc","binary_version":"1.30.2-3build6"},{"binary_version":"1.30.2-3build6","binary_name":"ruby-grpc-tools"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-45799.json"}},{"package":{"name":"grpc","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/grpc?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.51.1-3build3","1.51.1-3build4","1.51.1-4","1.51.1-4build1","1.51.1-4build2","1.51.1-4.1build3","1.51.1-4.1build4","1.51.1-4.1build5"],"ecosystem_specific":{"binaries":[{"binary_name":"libgrpc++1.51t64","binary_version":"1.51.1-4.1build5"},{"binary_version":"1.51.1-4.1build5","binary_name":"libgrpc29t64"},{"binary_name":"protobuf-compiler-grpc","binary_version":"1.51.1-4.1build5"},{"binary_name":"python3-grpcio","binary_version":"1.51.1-4.1build5"},{"binary_name":"ruby-grpc","binary_version":"1.51.1-4.1build5"},{"binary_version":"1.51.1-4.1build5","binary_name":"ruby-grpc-tools"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-45799.json"}},{"package":{"name":"grpc","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/grpc?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.51.1-6build1","1.51.1-7","1.51.1-7ubuntu2","1.51.1-7ubuntu3","1.51.1-8ubuntu1"],"ecosystem_specific":{"binaries":[{"binary_name":"libgrpc++1.51t64","binary_version":"1.51.1-8ubuntu1"},{"binary_name":"libgrpc29t64","binary_version":"1.51.1-8ubuntu1"},{"binary_name":"protobuf-compiler-grpc","binary_version":"1.51.1-8ubuntu1"},{"binary_name":"python3-grpcio","binary_version":"1.51.1-8ubuntu1"},{"binary_name":"ruby-grpc","binary_version":"1.51.1-8ubuntu1"},{"binary_version":"1.51.1-8ubuntu1","binary_name":"ruby-grpc-tools"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-45799.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"},{"type":"Ubuntu","score":"medium"}]}