CVE-2026-114144: toml-node denial of service in integer parsing

CVE-2026-114144 · Severity: high · CVSS 7.5 · Published 2026-10-21

toml-node is a TOML parser used in Node.js and browser applications. An attacker can send a specially crafted TOML document with extremely long integer literals that consume excessive CPU time, freezing the application and preventing it from processing other requests or tasks.

Technologies: BinaryMuse Toml-Node, toml (npm). Vendors: BinaryMuse, npm.

Quick answers

Is CVE-2026-114144 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-114144 being exploited in the wild.
How severe is CVE-2026-114144?
High severity, with a CVSS score of 7.5, published 21 October 2026.
Which products and versions are affected?
BinaryMuse Toml-Node before 5.0.1; toml (npm) <= 5.0.0, SEMVER:introduced=0,fixed=5.0.1.
Is there a fix for CVE-2026-114144?
Yes. toml (npm): upgrade to 5.0.1 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-114144 attacked?
It is attacked over the network, in a software library.
Am I affected by CVE-2026-114144?
Check whether you run BinaryMuse Toml-Node or toml (npm) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • toml (npm): upgrade to 5.0.1 or later
    npm install toml@5.0.1

Technical details

The vulnerability exists in toml.parse(), which passes unbounded digit sequences to JavaScript's BigInt() function before validating whether the resulting value fits TOML's 64-bit integer range. Converting sufficiently long integer strings takes super-linear CPU time and blocks the Node.js event loop synchronously. An attacker with the ability to supply TOML input can trigger a denial of service by crafting a document with multi-megabyte integer literals.

Affected products

  • BinaryMuse toml-node before 5.0.1

Identifiers

  • CVE-2026-114144
  • GHSA-9qmh-m7c6-f92p

Timeline

  • 2026-10-21: disclosed

References

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