CVE-2025-54803: Sunnyadn Js-Toml

High severity, CVSS 7.5. EPSS: 0.5% chance of exploitation in the next 30 days.

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.

Affected products

• Sunnyadn Js-Toml: before 1.0.2 (fixed in 1.0.2)

Published 2025-08-05. Last modified 2026-06-17.