CVE-2026-114144 toml-node: Uncontrolled resource consumption (CPU DoS) via unbounded-length integer literals in toml.parse()
- Exploited in the wild
- Not known
- Fix
- Available
What is CVE-2026-114144?
CVE-2026-114144 is a high-severity vulnerability in BinaryMuse toml-node, published on 21 Oct 2026.
Official 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.
Which versions are affected by CVE-2026-114144?
2 open source packages ship an affected version, including toml.
| Package | Affected | Fixed in |
|---|---|---|
toml npm | All versions | 5.0.1 |
toml npm | All versions | 5.0.1 |
How do I fix CVE-2026-114144?
Upgrade toml to 5.0.1 or later.
Is CVE-2026-114144 being exploited?
There is no known exploitation of CVE-2026-114144 in the wild and no public exploit code.
Sources
Also known as GHSA-9qmh-m7c6-f92p, ROOT-APP-NPM-CVE-2026-114144.