CVE-2026-48854Public exploitNetwork attack vectorHinoki check available

Unauthenticated server crash via unbounded body accumulation

Published Jun 15, 2026 · Updated Jun 15, 2026

Resource exhaustion in elixir-grpc grpc 0.3.1 through 0.x allows remote attackers to crash the server via a streamed unary request body. Cowboy Handler read_full_body/3 recursively concatenates every chunk without a total-size limit and uses an infinite read timeout when grpc-timeout is absent. One unauthenticated connection to any unary RPC can grow BEAM memory until the node crashes; no special server configuration is required.

CVSS severity8.7
High
EPSS probability0.34%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Resource exhaustion in elixir-grpc grpc 0.3.1 through 0.x allows remote attackers to crash the server via a streamed unary request body. Cowboy Handler read_full_body/3 recursively concatenates every chunk without a total-size limit and uses an infinite read timeout when grpc-timeout is absent. One unauthenticated connection to any unary RPC can grow BEAM memory until the node crashes; no special server configuration is required.

The record

CVE
CVE-2026-48854
Published
Jun 15, 2026
Updated
Jun 15, 2026
Vendor
elixir-grpc
Product
grpc
Classifications
CWE-770, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 15, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0.3.1 <1.0.0
  2. Affected versionversion=d1abe70a6cad6dac4a3f8235d883d7c896989560 <49e18c3ec6bb9afe2f712caad3dbab5c56a68a00

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

elixir-grpc · grpcversion=0.3.1 <1.0.0; version=d1abe70a6cad6dac4a3f8235d883d7c896989560 <49e18c3ec6bb9afe2f712caad3dbab5c56a68a00

Published CVSS scores

8.7GitHub Security AdvisoryCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-770Allocation of Resources Without Limits or Throttling
T1499.004Endpoint Denial of Service: Application or System Exploitation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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