CVE-2026-48854 (GCVE-0-2026-48854)

Vulnerability from cvelistv5 – Published: 2026-06-15 21:55 – Updated: 2026-06-16 14:47
VLAI
Title
Unbounded request body accumulation causes memory exhaustion in elixir-grpc/grpc
Summary
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.
Severity
8.7 (High)
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
SSVC
Exploitation: poc Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-770 - Allocation of Resources Without Limits or Throttling
Assigner
EEF
References
Impacted products
Vendor Product Version
elixir-grpc grpc Affected: 0.3.1 , < 1.0.0 (semver)
    cpe:2.3:a:elixir-grpc:grpc:*:*:*:*:*:*:*:*
 Create a notification for this product.
elixir-grpc grpc Affected: d1abe70a6cad6dac4a3f8235d883d7c896989560 , < 49e18c3ec6bb9afe2f712caad3dbab5c56a68a00 (git)
    cpe:2.3:a:elixir-grpc:grpc:*:*:*:*:*:*:*:*
 Create a notification for this product.
Credits
Peter Ullrich Paulo Valente Jonatan Männchen
Show details on NVD website
To clipboard 

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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.