CVE-2025-55195

HIGH EPSS 22.4%
Published Aug 14, 202510mo ago · Modified Jun 17, 20262w ago
7.3 CVSS 3.1
High
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Published Aug 14, 2025 10mo ago
Last Modified Jun 17, 2026 2w ago

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.

CVSS Details

Base Score
7.3
Exploitability
3.9
Impact
3.4
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Low
Integrity Low
Availability Low

Threat Intelligence

EPSS Exploit Probability
22.4% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-1321

References 3

  • github.com https://github.com/denoland/std/commit/540662cfd6d71e969af292aa604ef4049dbe271b
  • github.com https://github.com/denoland/std/releases/tag/release-2025.08.13
  • github.com https://github.com/denoland/std/security/advisories/GHSA-crjp-8r9q-2j9r

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.