What’s Vulnerable › Vulnerabilities

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

• Severity: high (CVSS 8.7 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-21 · updated 2026-10-23
• Weakness: CWE-407

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.

Affected products

• BinaryMuse toml-node: before 5.0.1

References

• https://github.com/BinaryMuse/toml-node/commit/609c873fffea0a27ebe5b4dd098eed2b3daf3606
• https://github.com/BinaryMuse/toml-node/releases/tag/v5.0.1
• https://github.com/BinaryMuse/toml-node/security/advisories/GHSA-4qx8-w7c3-pj3p

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