CVE-2026-114141
toml-node: Quadratic-complexity DoS via many array-of-tables headers in toml.parse()
HIGH 8.7EPSS 0.5%
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.
- Affected
- BinaryMuse · toml-node
- CVSS v4.0 GITHUB
- 8.7 HIGH
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - CVSS v4.0 GitHub
- 8.7 HIGH
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N - EPSS
- 0.47% chance of exploitation in the next 30 days, 41st percentile
- Published
- 2026-10-21
- Updated
- 2026-10-23
Proof-of-concept exploits (1)
CVE references
- BinaryMuse/toml-node/commit/609c873fffea0a27ebe5b4dd098eed2b3daf3606REFERENCE
- BinaryMuse/toml-node/releases/tag/v5.0.1REFERENCE
- BinaryMuse/toml-node/security/advisories/GHSA-4qx8-w7c3-pj3pREFERENCE