High
grpc — security advisory
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.
- Products
- grpc
- Affected versions
- 0.10.2-1, 0.11.1-1, 1.16.1-1, 1.16.1-1ubuntu1, 1.16.1-1ubuntu3, 1.16.1-1ubuntu4, 1.16.1-1ubuntu5, 1.3.2-1, 1.3.2-1.1~build1, 1.3.2-1ubuntu1, 1.30.2-3, 1.30.2-3build1, 1.30.2-3build3, 1.30.2-3build5, 1.30.2-3build6, 1.51.1-10ubuntu1, 1.51.1-3build3, 1.51.1-3build4, 1.51.1-4, 1.51.1-4.1build3, 1.51.1-4.1build4, 1.51.1-4.1build5, 1.51.1-4build1, 1.51.1-4build2, 1.51.1-6build1, 1.51.1-7, 1.51.1-7ubuntu2, 1.51.1-7ubuntu3, 1.51.1-8ubuntu1, 1.51.1-9, 1.51.1-9ubuntu3
- Fixed versions
- Not specified
- CVEs
- CVE-2026-45799
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 03:05 UTC · Revision 1
Source evidence
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.
osv:UBUNTU-CVE-2026-45799
grpc
Fixed versions: Not specified
grpc
Fixed versions: Not specified
grpc
Fixed versions: Not specified
grpc
Fixed versions: Not specified
grpc
Fixed versions: Not specified
grpc
Fixed versions: Not specified
grpc
Fixed versions: Not specified
Complete source record
{
"id": "e7fe8b4fdd039dd6b9fda3cd8a097cfc91325610ae2928e13f7fed106f47d652",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-45799",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-CVE-2026-45799",
"summary": "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.",
"evidence": "osv:UBUNTU-CVE-2026-45799",
"products": [
{
"name": {
"value": "grpc",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "0.10.2-1",
"evidence": "/affected/0/versions"
},
{
"value": "0.11.1-1",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
"value": "grpc",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.3.2-1",
"evidence": "/affected/1/versions"
},
{
"value": "1.3.2-1ubuntu1",
"evidence": "/affected/1/versions"
},
{
"value": "1.3.2-1.1~build1",
"evidence": "/affected/1/versions"
}
]
},
{
"name": {
"value": "grpc",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.16.1-1",
"evidence": "/affected/2/versions"
},
{
"value": "1.16.1-1ubuntu1",
"evidence": "/affected/2/versions"
},
{
"value": "1.16.1-1ubuntu3",
"evidence": "/affected/2/versions"
},
{
"value": "1.16.1-1ubuntu4",
"evidence": "/affected/2/versions"
},
{
"value": "1.16.1-1ubuntu5",
"evidence": "/affected/2/versions"
}
]
},
{
"name": {
"value": "grpc",
"evidence": "/affected/3/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.30.2-3",
"evidence": "/affected/3/versions"
},
{
"value": "1.30.2-3build1",
"evidence": "/affected/3/versions"
},
{
"value": "1.30.2-3build3",
"evidence": "/affected/3/versions"
},
{
"value": "1.30.2-3build5",
"evidence": "/affected/3/versions"
},
{
"value": "1.30.2-3build6",
"evidence": "/affected/3/versions"
}
]
},
{
"name": {
"value": "grpc",
"evidence": "/affected/4/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.51.1-3build3",
"evidence": "/affected/4/versions"
},
{
"value": "1.51.1-3build4",
"evidence": "/affected/4/versions"
},
{
"value": "1.51.1-4",
"evidence": "/affected/4/versions"
},
{
"value": "1.51.1-4build1",
"evidence": "/affected/4/versions"
},
{
"value": "1.51.1-4build2",
"evidence": "/affected/4/versions"
},
{
"value": "1.51.1-4.1build3",
"evidence": "/affected/4/versions"
},
{
"value": "1.51.1-4.1build4",
"evidence": "/affected/4/versions"
},
{
"value": "1.51.1-4.1build5",
"evidence": "/affected/4/versions"
}
]
},
{
"name": {
"value": "grpc",
"evidence": "/affected/5/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.51.1-8ubuntu1",
"evidence": "/affected/5/versions"
},
{
"value": "1.51.1-9",
"evidence": "/affected/5/versions"
},
{
"value": "1.51.1-9ubuntu3",
"evidence": "/affected/5/versions"
},
{
"value": "1.51.1-10ubuntu1",
"evidence": "/affected/5/versions"
}
]
},
{
"name": {
"value": "grpc",
"evidence": "/affected/6/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.51.1-6build1",
"evidence": "/affected/6/versions"
},
{
"value": "1.51.1-7",
"evidence": "/affected/6/versions"
},
{
"value": "1.51.1-7ubuntu2",
"evidence": "/affected/6/versions"
},
{
"value": "1.51.1-7ubuntu3",
"evidence": "/affected/6/versions"
},
{
"value": "1.51.1-8ubuntu1",
"evidence": "/affected/6/versions"
}
]
}
],
"severity": "high",
"structured": {
"id": "UBUNTU-CVE-2026-45799",
"aliases": [
"UBUNTU-CVE-2026-45799"
],
"metrics": [
{
"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"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "grpc",
"purl": "pkg:deb/ubuntu/grpc?arch=source&distro=xenial",
"ecosystem": "Ubuntu:16.04:LTS"
},
"versions": [
"0.10.2-1",
"0.11.1-1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-45799.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "libgrpc0",
"binary_version": "0.11.1-1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "grpc",
"purl": "pkg:deb/ubuntu/grpc?arch=source&distro=bionic",
"ecosystem": "Ubuntu:18.04:LTS"
},
"versions": [
"1.3.2-1",
"1.3.2-1ubuntu1",
"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"
},
"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"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "grpc",
"purl": "pkg:deb/ubuntu/grpc?arch=source&distro=focal",
"ecosystem": "Ubuntu:20.04:LTS"
},
"versions": [
"1.16.1-1",
"1.16.1-1ubuntu1",
"1.16.1-1ubuntu3",
"1.16.1-1ubuntu4",
"1.16.1-1ubuntu5"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-45799.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "libgrpc++1",
"binary_version": "1.16.1-1ubuntu5"
},
{
"binary_name": "libgrpc6",
"binary_version": "1.16.1-1ubuntu5"
},
{
"binary_name": "protobuf-compiler-grpc",
"binary_version": "1.16.1-1ubuntu5"
},
{
"binary_name": "python3-grpcio",
"binary_version": "1.16.1-1ubuntu5"
},
{
"binary_name": "ruby-grpc",
"binary_version": "1.16.1-1ubuntu5"
},
{
"binary_name": "ruby-grpc-tools",
"binary_version": "1.16.1-1ubuntu5"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "grpc",
"purl": "pkg:deb/ubuntu/grpc?arch=source&distro=jammy",
"ecosystem": "Ubuntu:22.04:LTS"
},
"versions": [
"1.30.2-3",
"1.30.2-3build1",
"1.30.2-3build3",
"1.30.2-3build5",
"1.30.2-3build6"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-45799.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "libgrpc++1",
"binary_version": "1.30.2-3build6"
},
{
"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_name": "ruby-grpc-tools",
"binary_version": "1.30.2-3build6"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "grpc",
"purl": "pkg:deb/ubuntu/grpc?arch=source&distro=noble",
"ecosystem": "Ubuntu:24.04:LTS"
},
"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"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-45799.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "libgrpc++1.51t64",
"binary_version": "1.51.1-4.1build5"
},
{
"binary_name": "libgrpc29t64",
"binary_version": "1.51.1-4.1build5"
},
{
"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_name": "ruby-grpc-tools",
"binary_version": "1.51.1-4.1build5"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "grpc",
"purl": "pkg:deb/ubuntu/grpc?arch=source&distro=stonking",
"ecosystem": "Ubuntu:26.10"
},
"versions": [
"1.51.1-8ubuntu1",
"1.51.1-9",
"1.51.1-9ubuntu3",
"1.51.1-10ubuntu1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-45799.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "libgrpc++1.51t64",
"binary_version": "1.51.1-10ubuntu1"
},
{
"binary_name": "libgrpc29t64",
"binary_version": "1.51.1-10ubuntu1"
},
{
"binary_name": "protobuf-compiler-grpc",
"binary_version": "1.51.1-10ubuntu1"
},
{
"binary_name": "python3-grpcio",
"binary_version": "1.51.1-10ubuntu1"
},
{
"binary_name": "ruby-grpc",
"binary_version": "1.51.1-10ubuntu1"
},
{
"binary_name": "ruby-grpc-tools",
"binary_version": "1.51.1-10ubuntu1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "grpc",
"purl": "pkg:deb/ubuntu/grpc?arch=source&distro=resolute",
"ecosystem": "Ubuntu:26.04:LTS"
},
"versions": [
"1.51.1-6build1",
"1.51.1-7",
"1.51.1-7ubuntu2",
"1.51.1-7ubuntu3",
"1.51.1-8ubuntu1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-45799.json"
},
"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_name": "ruby-grpc-tools",
"binary_version": "1.51.1-8ubuntu1"
}
]
}
}
],
"modified": "2026-10-17T13:00:11.478662120Z",
"provider": "osv",
"upstream": [
"CVE-2026-45799"
],
"references": [
"https://ubuntu.com/security/CVE-2026-45799",
"https://www.cve.org/CVERecord?id=CVE-2026-45799"
]
},
"related_cves": [
{
"value": "CVE-2026-45799",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 360390,
"published_at": "2026-07-17T20:17:00+00:00"
}