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CVE-2026-114141— toml-node: Quadratic-complexity DoS via many array-of-tables headers in toml.parse()

Quick assessment

Affected
BinaryMuse toml-node
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

toml-node 是一个用于 Node.js 和浏览器的 TOML 解析器。在 5.0.1 版本之前，toml.parse() 编译器中位于 lib/compiler.js 的 addTableArray() 函数会对每个表数组头部（array-of-tables header）重新扫描完整的 assignedPaths 和 valueAssignments 记账集合。由于不同的 [[name]] 路径未被剪枝，包含大量此类头部的文档会引发二次方复杂度的同步计算，从而阻塞 Node.js 事件循环，导致同一进程中

CVSS 8.7 · High

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-114141

Vulnerability Information
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Vulnerability Title
toml-node: Quadratic-complexity DoS via many array-of-tables headers in toml.parse()
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
算法复杂性
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
BinaryMuse toml-node < 5.0.1 -

II. Public POCs for CVE-2026-114141

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III. Intelligence Information for CVE-2026-114141

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Vendor Advisories for CVE-2026-114141 (1)

Vendor Pages for CVE-2026-114141 (1)

Same Patch Batch · BinaryMuse · 2026-10-21 · 4 CVEs total

CVE-2026-114142 8.8 HIGH toml-node: Prototype pollution: parsing a TOML document can write to Object.prototype
CVE-2026-114143 8.7 HIGH toml-node: Quadratic-complexity DoS via long dotted keys or table paths in toml.parse()
CVE-2026-114144 7.5 HIGH toml-node: Uncontrolled resource consumption (CPU DoS) via unbounded-length integer litera

IV. Related Vulnerabilities

Same product: toml-node
Same vendor: BinaryMuse
Same weakness: CWE-407

V. Comments for CVE-2026-114141

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