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CVE-2026-48854— Unbounded request body accumulation causes memory exhaustion in elixir-grpc/grpc

Quick assessment

Affected
elixir-grpc grpc
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

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 0.3.1版本至1.0.0之前版本存在资源管理错误漏洞，该漏洞源于在'Elixir.GRPC.Server.Adapters.Cowboy.Handler':read_full_body/3函数中，接收的每个数据块都会累积到一个不断增长的二进制文件中，且无大小限制；此外，当客户端省略grpc-timeout标头时，每个数据块的读取超时时间

CVSS 8.7 · High EPSS 0.45% · P37

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking

Affected Version Matrix 2

VendorProduct Version RangeStatus
elixir-grpc grpc 0.3.0-alpha.2< 1.0.0 affected
d1abe70a6cad6dac4a3f8235d883d7c896989560< 49e18c3ec6bb9afe2f712caad3dbab5c56a68a00 affected
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I. Basic Information for CVE-2026-48854

Vulnerability Information
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Vulnerability Title
Unbounded request body accumulation causes memory exhaustion in elixir-grpc/grpc
Source: CVE Program / CVE List V5
Vulnerability Description
Allocation of Resources Without Limits or Throttling vulnerability in elixir-grpc grpc allows unauthenticated attackers to exhaust the BEAM's memory and crash the server by streaming a large or slow-trickle unary request body. 'Elixir.GRPC.Server.Adapters.Cowboy.Handler':read_full_body/3 (lib/grpc/server/adapters/cowboy/handler.ex) accumulates every received chunk into a single growing binary with no size cap. Additionally, when the client omits the grpc-timeout header, the per-chunk read timeout resolves to :infinity, allowing a slow-trickle client to keep the connection alive indefinitely while memory grows. A single connection is sufficient to exhaust server memory and crash the node. This issue affects grpc: from 0.3.0-alpha.2 before 1.0.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
不加限制或调节的资源分配
Source: CVE Program / CVE List V5
Vulnerability Title
elixir-grpc gRPC Elixir 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
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 0.3.1版本至1.0.0之前版本存在资源管理错误漏洞，该漏洞源于在'Elixir.GRPC.Server.Adapters.Cowboy.Handler':read_full_body/3函数中，接收的每个数据块都会累积到一个不断增长的二进制文件中，且无大小限制；此外，当客户端省略grpc-timeout标头时，每个数据块的读取超时时间
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
elixir-grpc grpc 0.3.0-alpha.2 ~ 1.0.0 cpe:2.3:a:elixir-grpc:grpc:*:*:*:*:*:*:*:*
elixir-grpc grpc d1abe70a6cad6dac4a3f8235d883d7c896989560 ~ 49e18c3ec6bb9afe2f712caad3dbab5c56a68a00 cpe:2.3:a:elixir-grpc:grpc:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-48854

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III. Intelligence Information for CVE-2026-48854

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Patches & Fixes for CVE-2026-48854 (2)

Vendor Advisories for CVE-2026-48854 (3)

Same Patch Batch · elixir-grpc · 2026-06-15 · 4 CVEs total

CVE-2026-48853 9.2 CRITICAL Remote code execution and denial of service via unsafe Erlang term deserialization in elix
CVE-2026-48599 7.6 HIGH Authorization bypass via path binding override in elixir-grpc/grpc HTTP transcoding
CVE-2026-53430 grpc gzip decompression bomb in GRPC.Compressor.Gzip.decompress/1

IV. Related Vulnerabilities

Same product: grpc
Same vendor: elixir-grpc
Same weakness: CWE-770

V. Comments for CVE-2026-48854

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