CVE-2025-55195

@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 v3 7.3 HIGH

7.3^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact LOW

Scope UNCHANGED

References

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

Configurations

No configuration.

History

No history.

Information

Published : 2025-08-14 17:15

Updated : 2025-08-15 13:12

NVD link : CVE-2025-55195

Mitre link : CVE-2025-55195

CVE.ORG link : CVE-2025-55195

JSON object : View

Products Affected

No product.

CWE

CWE-1321

Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')

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