BinaryMuse toml-node up to 5.0.0 TOML Parser lib/parser.js toml.parse resource consumption

Summaryinfo

A vulnerability described as problematic has been identified in BinaryMuse toml-node up to 5.0.0. Affected by this vulnerability is the function toml.parse of the file lib/parser.js of the component TOML Parser. Executing a manipulation can lead to resource consumption. This vulnerability is handled as CVE-2026-114144. The attack can be executed remotely. There is not any exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in BinaryMuse toml-node up to 5.0.0. It has been declared as problematic. This vulnerability affects the function toml.parse of the file lib/parser.js of the component TOML Parser. The manipulation with an unknown input leads to a resource consumption vulnerability. The CWE definition for the vulnerability is CWE-400. The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources. As an impact it is known to affect availability. CVE summarizes:

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.

The advisory is shared for download at github.com. This vulnerability was named CVE-2026-114144 since 10/20/2026. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1499.

Upgrading to version 5.0.1 eliminates this vulnerability.

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Productinfo

Vendor

• BinaryMuse

Name

• toml-node

Version

• 5.0

Website

• Product: https://github.com/BinaryMuse/toml-node/

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