EUVD-2026-70739
GHSA-82x6-q7mm-w9cf
Severity by source
Sources disagree (Low–High)AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Network-reachable, no auth or interaction needed, pure availability DoS with no confidentiality or integrity impact; matches provided vector.
vuln.today treats the vendor’s rating as authoritative. A higher third-party CVSS (e.g. CISA-ADP) is shown for transparency but does not drive the headline severity.
CVSS VectorVendor: GitHub_M
Lifecycle Timeline
6Blast Radius
ecosystem impact- 86 npm packages depend on toml (2 direct, 84 indirect)
Ecosystem-wide dependent count for version 4.2.0.
DescriptionCVE.org
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$parseinline_table_entry functions recurse through nested arrays and inline tables without a depth limit. A remote unauthenticated application parsing an attacker-controlled TOML document containing a few thousand nested arrays or inline tables can exhaust the Node.js call stack, raise an unexpected RangeError rather than the parser's SyntaxError, and terminate an unprotected request worker or process. The corresponding grammar source is src/toml.pegjs, where the generated parser must be bounded. This issue is fixed in version 4.2.0.
Articles & Coverage 1
AnalysisAI
Uncontrolled recursion in toml-node (npm package toml, ~47 million monthly downloads) allows remote unauthenticated attackers to crash any Node.js process that parses attacker-controlled TOML input. The Peggy 5.1.0-generated recursive-descent parser has no depth limit in the mutual recursion between peg$parsevalue, peg$parsearray, and peg$parseinline_table_entry; a ~5-6 KB payload of deeply nested arrays reliably exhausts the call stack and raises an uncatchable RangeError that terminates the request worker or process. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires only that the target application calls `toml.parse()` on data supplied or influenced by the attacker - for example, a REST API that accepts a TOML-formatted request body, a CLI tool that reads user-provided TOML config files, or a build tool that processes workspace manifests. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | CVSS 7.5 (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H) accurately characterises this as a network-reachable, low-complexity, unauthenticated denial-of-service with no confidentiality or integrity impact. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Upgrade to toml version 4.2.0 or later via `npm install toml@4.2.0` (or update `package.json` and run `npm install`). … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all applications and services using the toml package (versions prior to 4.2.0) and identify which ones accept external or user-controlled TOML input; prioritize customer-facing and critical production systems. …
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