CVE-2025-54803

js-toml is vulnerable to Prototype Pollution

CVSS 7.9 HIGHEPSS 0.5%CWE-1321

Vexday Risk Score

21Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 7.9EPSS 0.5%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

05 Aug 2025Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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.

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H

Affected products

sunnyadn · js-toml

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References

https://gist.github.com/siunam321/f3dc4d21a5a932c67b6c11d0026f5afc https://github.com/sunnyadn/js-toml/commit/b125910a3f094b744c9c3571360d4b9e3a472f66 https://github.com/sunnyadn/js-toml/security/advisories/GHSA-65fc-cr5f-v7r2