CVE-2026-48853— elixir-grpc gRPC Elixir 反序列化漏洞

Remote code execution and denial of service via unsafe Erlang term deserialization in elixir-grpc/grpc

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.

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可信数据的反序列化

elixir-grpc gRPC Elixir 反序列化漏洞

elixir-grpc gRPC Elixir是elixir-grpc组织的一款基于Elixir语言构建的gRPC框架。 elixir-grpc gRPC Elixir 0.4.0至1.0.0之前版本存在安全漏洞，该漏洞源于'Elixir.GRPC.Codec.Erlpack':decode/2函数在解码数据时未使用安全选项、无大小限制且无类型守卫，可能导致未经验证的攻击者利用特制有效载荷耗尽原子表或执行任意代码。

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