CVE-2026-114141 toml-node: Quadratic-complexity DoS via many array-of-tables headers in toml.parse()
- Exploited in the wild
- Not known
- Fix
- Available
What is CVE-2026-114141?
CVE-2026-114141 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, the toml.parse() compiler's addTableArray() function in lib/compiler.js rescans the complete assignedPaths and valueAssignments bookkeeping sets for every array-of-tables header. Distinct [[name]] paths are not pruned, so a document with many such headers causes quadratic synchronous work and can block the Node.js event loop, denying service to other operations in the process. This issue is fixed in version 5.0.1.
Weakness: CWE-407
Which versions are affected by CVE-2026-114141?
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-2026-114141?
Upgrade toml to 5.0.1 or later.
Is CVE-2026-114141 being exploited?
There is no known exploitation of CVE-2026-114141 in the wild and no public exploit code.
Sources
Also known as GHSA-4qx8-w7c3-pj3p, ROOT-APP-NPM-CVE-2026-114141.