toml-node is a TOML parser for Node.js and the browser. Prior to 5.0.1, toml.parse() repeatedly slices and rejoins every path prefix in lib/compiler.js while processing long dotted keys, table headers, array-of-tables headers, and inline-table keys in assign(), deepRef(), and setNestedKey(). The resulting quadratic work can block the Node.js event loop for several seconds, and sufficiently long paths can terminate the process through memory exhaustion. The maxDepth option does not limit key-segment count and therefore does not mitigate this path. This issue is fixed in version 5.0.1.

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Advisories
Source ID Title
Github GHSA Github GHSA GHSA-9j65-hcg3-gc64 toml-node: Quadratic-complexity DoS via long dotted keys or table paths in toml.parse()
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Thu, 22 Oct 2026 12:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-770
References
Metrics threat_severity

None

cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

threat_severity

Important


Thu, 22 Oct 2026 10:45:00 +0000

Type Values Removed Values Added
First Time appeared Binarymuse
Binarymuse toml-node
Vendors & Products Binarymuse
Binarymuse toml-node

Wed, 21 Oct 2026 20:45:00 +0000

Type Values Removed Values Added
Description toml-node is a TOML parser for Node.js and the browser. Prior to 5.0.1, toml.parse() repeatedly slices and rejoins every path prefix in lib/compiler.js while processing long dotted keys, table headers, array-of-tables headers, and inline-table keys in assign(), deepRef(), and setNestedKey(). The resulting quadratic work can block the Node.js event loop for several seconds, and sufficiently long paths can terminate the process through memory exhaustion. The maxDepth option does not limit key-segment count and therefore does not mitigate this path. This issue is fixed in version 5.0.1.
Title toml-node: Quadratic-complexity DoS via long dotted keys or table paths in toml.parse()
Weaknesses CWE-407
References
Metrics cvssV4_0

{'score': 8.7, 'vector': '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'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-10-21T20:31:01.539Z

Reserved: 2026-10-20T21:53:58.473Z

Link: CVE-2026-114143

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Deferred

Published: 2026-10-21T21:17:56.963

Modified: 2026-10-22T16:48:25.420

Link: CVE-2026-114143

cve-icon Redhat

Severity : Important

Publid Date: 2026-10-21T20:31:01Z

Links: CVE-2026-114143 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-10-22T15:45:08Z

Weaknesses