toml-node is a TOML parser for Node.js and the browser. Prior to 4.2.0, toml.parse() uses a Peggy 5.1.0 generated recursive-descent parser in lib/parser.js whose peg$parsevalue, peg$parsearray, and peg$parseinline_table_entry functions recurse through nested arrays and inline tables without a depth limit. A remote unauthenticated application parsing an attacker-controlled TOML document containing a few thousand nested arrays or inline tables can exhaust the Node.js call stack, raise an unexpected RangeError rather than the parser's SyntaxError, and terminate an unprotected request worker or process. The corresponding grammar source is src/toml.pegjs, where the generated parser must be bounded. This issue is fixed in version 4.2.0.
History

Fri, 04 Sep 2026 15:45:00 +0000

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

Fri, 04 Sep 2026 14:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 04 Sep 2026 12:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-606
References
Metrics threat_severity

None

threat_severity

Low


Thu, 03 Sep 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 4.2.0, toml.parse() uses a Peggy 5.1.0 generated recursive-descent parser in lib/parser.js whose peg$parsevalue, peg$parsearray, and peg$parseinline_table_entry functions recurse through nested arrays and inline tables without a depth limit. A remote unauthenticated application parsing an attacker-controlled TOML document containing a few thousand nested arrays or inline tables can exhaust the Node.js call stack, raise an unexpected RangeError rather than the parser's SyntaxError, and terminate an unprotected request worker or process. The corresponding grammar source is src/toml.pegjs, where the generated parser must be bounded. This issue is fixed in version 4.2.0.
Title toml-node: Uncontrolled Recursion
Weaknesses CWE-674
References
Metrics 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'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2026-09-03T20:37:22.758Z

Updated: 2026-09-04T13:41:25.761Z

Reserved: 2026-08-20T20:07:49.962Z

Link: CVE-2026-77465

cve-icon Vulnrichment

Updated: 2026-09-04T13:28:20.381Z

cve-icon NVD

Status : Deferred

Published: 2026-09-03T21:17:21.803

Modified: 2026-09-09T21:09:13.080

Link: CVE-2026-77465

cve-icon Redhat

Severity : Low

Publid Date: 2026-09-03T20:37:22Z

Links: CVE-2026-77465 - Bugzilla