Critical
grpc — security advisory
Deserialization of Untrusted Data and Allocation of Resources Without Limits or Throttling vulnerabilities in elixir-grpc grpc allow unauthenticated attackers to crash the BEAM node via atom table exhaustion and, when a decoded term flows into a call site that invokes it, achieve remote code execution on the server. 'Elixir.GRPC.Codec.Erlpack':decode/2 (lib/grpc/codec/erlpack.ex) calls :erlang.binary_to_term/1 on the raw gRPC message body without the :safe option, no size bound, and no type guard. Any unauthenticated peer that sends a request with Content-Type: application/grpc+erlpack can send a crafted payload that mints arbitrary new atoms (which are never garbage-collected, exhausting the bounded atom table and crashing the VM) or that encodes a fun term which, if applied anywhere downstream, executes attacker-controlled code inside the server process. This issue affects grpc: from 0.4.0 before 1.0.0.
- 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, 1.51.1-6, 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-2026-48853
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 00:50 UTC · Revision 1
Source evidence
Deserialization of Untrusted Data and Allocation of Resources Without Limits or Throttling vulnerabilities in elixir-grpc grpc allow unauthenticated attackers to crash the BEAM node via atom table exhaustion and, when a decoded term flows into a call site that invokes it, achieve remote code execution on the server. 'Elixir.GRPC.Codec.Erlpack':decode/2 (lib/grpc/codec/erlpack.ex) calls :erlang.binary_to_term/1 on the raw gRPC message body without the :safe option, no size bound, and no type guard. Any unauthenticated peer that sends a request with Content-Type: application/grpc+erlpack can send a crafted payload that mints arbitrary new atoms (which are never garbage-collected, exhausting the bounded atom table and crashing the VM) or that encodes a fun term which, if applied anywhere downstream, executes attacker-controlled code inside the server process. This issue affects grpc: from 0.4.0 before 1.0.0.
osv:UBUNTU-CVE-2026-48853
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
grpc
Fixed versions: Not specified
Complete source record
{
"id": "1182869fd2c5db48e2ba18fbedb20ba9d2fb3fba8b7503bbaf120c73019a7a30",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-48853",
"method": "structured",
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"title": "UBUNTU-CVE-2026-48853",
"summary": "Deserialization of Untrusted Data and Allocation of Resources Without Limits or Throttling vulnerabilities in elixir-grpc grpc allow unauthenticated attackers to crash the BEAM node via atom table exhaustion and, when a decoded term flows into a call site that invokes it, achieve remote code execution on the server. 'Elixir.GRPC.Codec.Erlpack':decode/2 (lib/grpc/codec/erlpack.ex) calls :erlang.binary_to_term/1 on the raw gRPC message body without the :safe option, no size bound, and no type guard. Any unauthenticated peer that sends a request with Content-Type: application/grpc+erlpack can send a crafted payload that mints arbitrary new atoms (which are never garbage-collected, exhausting the bounded atom table and crashing the VM) or that encodes a fun term which, if applied anywhere downstream, executes attacker-controlled code inside the server process. This issue affects grpc: from 0.4.0 before 1.0.0.",
"evidence": "osv:UBUNTU-CVE-2026-48853",
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{
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},
{
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],
"modified": "2026-10-17T12:56:06.363037698Z",
"provider": "osv",
"upstream": [
"CVE-2026-48853"
],
"references": [
"https://ubuntu.com/security/CVE-2026-48853",
"https://www.cve.org/CVERecord?id=CVE-2026-48853"
]
},
"related_cves": [
{
"value": "CVE-2026-48853",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 354822,
"published_at": "2026-06-15T23:16:00+00:00"
}