CVE-2026-74837Public exploitNetwork attack vectorHinoki check available

Node abort via unbounded RPC field atom creation

Published Sep 1, 2026 · Updated Sep 1, 2026

Resource-allocation exhaustion in AshTypescript 0.1.0 through 0.17.3 allows remote attackers to abort the BEAM node via RPC fields. FieldFormatter.convert_to_field_atom/2 passes each unknown client field name to String.to_atom/1 before FieldSelector verifies that the field exists. Any exposed AshTypescript RPC endpoint is reachable without authentication by default, and exhaustion interrupts every application on the node until restart.

CVSS severity8.7
High
EPSS probability0.32%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Resource-allocation exhaustion in AshTypescript 0.1.0 through 0.17.3 allows remote attackers to abort the BEAM node via RPC fields. FieldFormatter.convert_to_field_atom/2 passes each unknown client field name to String.to_atom/1 before FieldSelector verifies that the field exists. Any exposed AshTypescript RPC endpoint is reachable without authentication by default, and exhaustion interrupts every application on the node until restart.

The record

CVE
CVE-2026-74837
Published
Sep 1, 2026
Updated
Sep 1, 2026
Vendor
Ash Framework
Product
AshTypescript
Classifications
CWE-770, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 1, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 1, 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=0.1.0 <0.18.0
  2. Affected versionversion=1a3d4c343430c8e4784acfcd33122a807fafa086 <df95df4b9afdca5e5bbce32dbd566ccc49a7f14b

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Ash Framework · AshTypescriptversion=0.1.0 <0.18.0; version=1a3d4c343430c8e4784acfcd33122a807fafa086 <df95df4b9afdca5e5bbce32dbd566ccc49a7f14b

Published CVSS scores

8.7GitHubCVSS: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.

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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
T1499.004Application 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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