CVE-2026-48854

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 0.3.1 before 1.0.0.

Source: NVD

References

• [NVD]https://nvd.nist.gov/vuln/detail/CVE-2026-48854
• [Other]https://cna.erlef.org/cves/CVE-2026-48854.html
• [Other]https://github.com/elixir-grpc/grpc/commit/49e18c3ec6bb9afe2f712caad3dbab5c56a68a00
• [Other]https://github.com/elixir-grpc/grpc/security/advisories/GHSA-q8gf-9rvj-gmgj
• [Other]https://osv.dev/vulnerability/EEF-CVE-2026-48854

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