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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
grpcHex | >= 0.3.1, < 1.0.0 | 1.0.0 |
Affected products
2(expand)+ 1 more
- (no CPE)
- (no CPE)range: >=0.3.1,<1.0.0
Patches
Vulnerability mechanics
References
8- github.com/advisories/GHSA-q8gf-9rvj-gmgjghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-48854ghsaADVISORY
- cna.erlef.org/cves/CVE-2026-48854.htmlnvdWEB
- github.com/elixir-grpc/grpc/commit/49e18c3ec6bb9afe2f712caad3dbab5c56a68a00nvdWEB
- github.com/elixir-grpc/grpc/pull/542ghsaWEB
- github.com/elixir-grpc/grpc/releases/tag/v1.0.0ghsaWEB
- github.com/elixir-grpc/grpc/security/advisories/GHSA-q8gf-9rvj-gmgjnvdWEB
- osv.dev/vulnerability/EEF-CVE-2026-48854nvdWEB
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