CVE-2025-54803

HIGH

js-toml < 1.0.2 - Prototype Pollution via Malicious TOML Input

Title source: llm
STIX 2.1

Description

js-toml is a TOML parser for JavaScript, fully compliant with the TOML 1.0.0 Spec. In versions below 1.0.2, a prototype pollution vulnerability in js-toml allows a remote attacker to add or modify properties of the global Object.prototype by parsing a maliciously crafted TOML input. This is fixed in version 1.0.2.

References (3)

Core 3

Scores

CVSS v3 7.5
EPSS 0.0048
EPSS Percentile 37.2%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

CISA SSVC

Vulnrichment
Exploitation poc
Automatable yes
Technical Impact partial

Details

CWE
CWE-1321
Status published
Products (2)
npm/js-toml 0 - 1.0.2npm
sunnyadn/js-toml < 1.0.2
Published Aug 05, 2025
Tracked Since Feb 18, 2026