CVE-2026-77465: high-severity vulnerability in BinaryMuse toml-node
toml-node: Uncontrolled Recursion
Published · Updated
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.5epss 0.6%
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected products
BinaryMuse · toml-nodeRelated CVEs — BinaryMuse toml-node
In the same product, most dangerous first.
CVE-2026-63376HIGHtoml-node: Prototype Pollution Leads to `Object.prototype` Corruption via `__proto__` Key-Path DesynchronizationEPSS 0.7%CVE-2026-114142HIGHtoml-node: Prototype pollution: parsing a TOML document can write to Object.prototypeEPSS 0.5%CVE-2026-114143HIGHtoml-node: Quadratic-complexity DoS via long dotted keys or table paths in toml.parse()EPSS 0.5%CVE-2026-114141HIGHtoml-node: Quadratic-complexity DoS via many array-of-tables headers in toml.parse()EPSS 0.5%CVE-2026-114144HIGHtoml-node: Uncontrolled resource consumption (CPU DoS) via unbounded-length integer literals in toml.parse()EPSS 0.4%