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js-yaml has prototype pollution in merge (<<)

🗓️ 14 Nov 2025 14:29:48Reported by GitHub Advisory DatabaseType 
github
 github🔗 github.com👁 3 Views

js-yaml prototype pollution in merge affects 4.1.0 and earlier; fixed in 4.1.1.

Related
Detection
Refs
ReporterTitlePublishedViews
Family
IBM Security Bulletins		Security Bulletin: Multiple vulnerabilities in IBM watsonx Orchestrate Developer Edition
30 Jan 202609:11
–ibm
IBM Security Bulletins		Security Bulletin: Multiple Vulnerabilities in IBM Event Streams
12 Mar 202612:03
–ibm
IBM Security Bulletins		Security Bulletin: IBM App Connect Enterprise is vulnerable to multiple vulnerabilities due to multiple node modules (CVE-2025-64718, CVE-2025-64756, CVE-2025-13466 & CVE-2025-65945)
22 Dec 202511:27
–ibm
IBM Security Bulletins		Security Bulletin: IBM Maximo Application Suite uses werkzeug-3.1.3,fonttools-4.60.0-cp311-cp311-manylinux2014_x86_64.manylinux_2_17_x86_64.whl,lodash.clonedeep-4.5.0.tgz,js-yaml-4.1.0.tgz,mdast-util-towhich is vulnerable to multiple CVEs
30 Jan 202605:39
–ibm
IBM Security Bulletins		Security Bulletin: Due to use of js-yaml-4.1.0.tgz, IBM Sterling Connect:Direct Web Services is affected by modify the prototype of the result of a parsed yaml.
4 Jun 202602:56
–ibm
IBM Security Bulletins		Security Bulletin: Multiple vulnerabilities in DataStage on Cloud Pak for Data
25 Feb 202616:28
–ibm
IBM Security Bulletins		Security Bulletin: Multiple security vulnerabilities are addressed with IBM Cloud Pak for Business Automation iFixes for March 2026.
27 Mar 202609:11
–ibm
IBM Security Bulletins		Security Bulletin: security vulnerabilities are addressed with IBM Business Automation Insights iFixes for April 2026.
5 May 202621:39
–ibm
IBM Security Bulletins		Security Bulletin: IBM Maximo Application Suite - Manage Component uses js-yaml-4.1.0 in map-application which is vulnerable to CVE-2025-64718
29 Jan 202614:37
–ibm
IBM Security Bulletins		Security Bulletin: IBM Maximo Application Suite uses multiple third party dependencies which are vulnerable to CVEs.
29 Dec 202505:42
–ibm
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Vulners
Node
nodecajs-yamlRange<3.14.2npm
OR
nodecajs-yamlRange4.0.0–4.1.1npm

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31 Jan 2026 03:32Current
6.4Medium risk
Vulners AI Score6.4
CVSS 3.15.3
EPSS0.00034
SSVC
CWE-1321
prototype pollutionmergeversion 4.1.0version 4.1.1untrusted yaml
3