CVE-2025-64718

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2025-64718
js-yaml is a JavaScript YAML parser and dumper. In js-yaml 4.1.0 and below, it's possible for an attacker to modify the prototype of the result of a parsed yaml document via prototype pollution (`__proto__`). All users who parse untrusted yaml documents may be impacted. The problem is patched in js-yaml 4.1.1. Users can protect against this kind of attack on the server by using `node --disable-proto=delete` or `deno` (in Deno, pollution protection is on by default).

5.3 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References
Link Resource
https://github.com/nodeca/js-yaml/commit/383665ff4248ec2192d1274e934462bb30426879 Patch
https://github.com/nodeca/js-yaml/security/advisories/GHSA-mh29-5h37-fv8m Vendor Advisory
Configurations

Configuration 1 (hide)

cpe:2.3:a:nodeca:js-yaml:*:*:*:*:*:node.js:*:*
History

02 Dec 2025, 19:33

Type Values Removed Values Added
CPE cpe:2.3:a:nodeca:js-yaml:*:*:*:*:*:node.js:*:*
First Time Nodeca
Nodeca js-yaml
References () https://github.com/nodeca/js-yaml/commit/383665ff4248ec2192d1274e934462bb30426879 - () https://github.com/nodeca/js-yaml/commit/383665ff4248ec2192d1274e934462bb30426879 - Patch
References () https://github.com/nodeca/js-yaml/security/advisories/GHSA-mh29-5h37-fv8m - () https://github.com/nodeca/js-yaml/security/advisories/GHSA-mh29-5h37-fv8m - Vendor Advisory

13 Nov 2025, 16:15

Type Values Removed Values Added
New CVE
Information

Published : 2025-11-13 16:15

Updated : 2025-12-02 19:33

NVD link : CVE-2025-64718

Mitre link : CVE-2025-64718

CVE.ORG link : CVE-2025-64718

JSON object : View

Products Affected

nodeca

  • js-yaml
CWE
CWE-1321

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