toml-node is a TOML parser for Node.js and the browser. Prior to 5.0.1, toml.parse() can write attacker-controlled properties to Object.prototype because quoteDottedString() in lib/compiler.js produces the same bookkeeping string for distinct quoted key paths, allowing addTableArray() to clear another key's guard. The assign() path then descends through an unowned Date value without applying the owned-container check and can reach the prototype chain. Objects created elsewhere in the process can inherit the injected property. This issue is fixed in version 5.0.1.
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Affected Vendors & Products
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History
Thu, 29 Oct 2026 20:30:00 +0000
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ssvc
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Thu, 22 Oct 2026 10:45:00 +0000
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Binarymuse
Binarymuse toml-node |
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| Vendors & Products |
Binarymuse
Binarymuse toml-node |
Wed, 21 Oct 2026 20:45:00 +0000
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| Description | toml-node is a TOML parser for Node.js and the browser. Prior to 5.0.1, toml.parse() can write attacker-controlled properties to Object.prototype because quoteDottedString() in lib/compiler.js produces the same bookkeeping string for distinct quoted key paths, allowing addTableArray() to clear another key's guard. The assign() path then descends through an unowned Date value without applying the owned-container check and can reach the prototype chain. Objects created elsewhere in the process can inherit the injected property. This issue is fixed in version 5.0.1. | |
| Title | toml-node: Prototype pollution: parsing a TOML document can write to Object.prototype | |
| Weaknesses | CWE-1321 | |
| References |
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| Metrics |
cvssV4_0
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Status: PUBLISHED
Assigner: GitHub_M
Published: 2026-10-21T20:28:36.615Z
Updated: 2026-10-28T18:19:14.202Z
Reserved: 2026-10-20T21:53:58.473Z
Link: CVE-2026-114142
Updated: 2026-10-28T18:19:05.995Z
Status : Deferred
Published: 2026-10-21T21:17:56.820
Modified: 2026-10-28T19:17:27.063
Link: CVE-2026-114142
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