VULNERABILITY INTELLIGENCE

CVE-2025-55195

CVSS score7.3 HIGH
EPSS probability0.34%
CISA KEVNot currently listed
Published2025-08-14
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

Description

@std/toml is the Deno Standard Library. Prior to version 1.0.9, an attacker can pollute the prototype chain in Node.js runtime and Browser when parsing untrusted TOML data, thus achieving Prototype Pollution (PP) vulnerability. This is because the library is merging an untrusted object with an empty object, which by default the empty object has the prototype chain. This issue has been patched in version 1.0.9.

Weakness classification

  • security-advisories@github.com: CWE-1321

Primary references