CVE-2021-29057Public exploitNetwork attack vector

Service hang via unterminated StaticPool tasks

Published Aug 11, 2023 · Updated Oct 9, 2024

Denial of service in StaticPool in SUCHMOKUO node-worker-threads-pool 1.4.3 and earlier allows remote attackers to hang its worker pool. StaticPool does not terminate a worker trapped in an expensive or nonterminating task, so enough such tasks occupy every worker and block later work. Exploitation requires a consuming application to pass attacker-influenced work into StaticPool and user interaction to invoke that path; the Node.js process remains alive while queued tasks stop.

CVSS severity6.5
Medium
EPSS probability0.59%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in StaticPool in SUCHMOKUO node-worker-threads-pool 1.4.3 and earlier allows remote attackers to hang its worker pool. StaticPool does not terminate a worker trapped in an expensive or nonterminating task, so enough such tasks occupy every worker and block later work. Exploitation requires a consuming application to pass attacker-influenced work into StaticPool and user interaction to invoke that path; the Node.js process remains alive while queued tasks stop.

The record

CVE
CVE-2021-29057
Published
Aug 11, 2023
Updated
Oct 9, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-770, CWE-400, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 11, 2023CVE publishedPublication date reported by the CVE source.
  2. Oct 9, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.5NIST National Vulnerability DatabaseCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

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
CWE-400Uncontrolled Resource Consumption
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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