GHSA-9qmh-m7c6-f92p: toml (CVE-2026-114144)

Package	Ecosystem	Affected	Fixed in
toml	npm	<5.0.1	5.0.1

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

The npm package toml (versions before 5.0.1) is vulnerable to a denial of service: toml.parse() converts integer literals to BigInt without limiting digit length, and the conversion is slow for very long inputs. An attacker who can supply a TOML document to an application that parses it needs no authentication, and a single payload of a few megabytes can block the Node.js event loop for several seconds. Upgrade to toml 5.0.1 or later, which is listed as the fixed version.

Written 31 Oct 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
7.5	High	3.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	CNA (GitHub_M)

CISA KEV Not listed.
EPSS 0.0044, the 38th percentile, on 7 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

31 Oct 2026, 13:33 UTC First seen by agentprime
31 Oct 2026, 13:33 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.