Vulnerability Description
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 Score
HIGH
Related Weaknesses (CWE)
References
- https://github.com/BinaryMuse/toml-node/commit/9d52e384f6030932174d1afb0d910154d
- https://github.com/BinaryMuse/toml-node/releases/tag/v5.0.1
- https://github.com/BinaryMuse/toml-node/security/advisories/GHSA-9qmh-m7c6-f92p
- https://github.com/BinaryMuse/toml-node/security/advisories/GHSA-9qmh-m7c6-f92p
FAQ
What is CVE-2026-114144?
CVE-2026-114144 is a vulnerability with a CVSS score of 7.5 (HIGH). 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 redu...
How severe is CVE-2026-114144?
CVE-2026-114144 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-114144?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.