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CVE-2026-29063 Immutable.js: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') in immutable

🗓️ 06 Mar 2026 18:25:22Reported by GoogleType 
osv
 osv🔗 osv.dev👁 3 Views

CVE-2026-29063: Immutable.js prototype pollution via mergeDeep and APIs; fixed in 3.8.3, 4.3.7, 5.1.5.

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Refs
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IBM Security Bulletins		Security Bulletin: IBM Transformation Advisor is affected by multiple vulnerabilities found in Java, JavaScript and IBM WebSphere Application Server Liberty
28 Apr 202613:06
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IBM Security Bulletins		Security Bulletin: Multiple Vulnerabilities in IBM Tivoli Netcool/OMNIbus_GUI
26 May 202614:03
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IBM Security Bulletins		Security Bulletin: IBM Maximo Application Suite - Monitor Component uses immutable-3.8.2.tgz, immutable-4.3.7.tgz which is vulnerable to CVE-2026-29063.
4 May 202606:47
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IBM Security Bulletins		Security Bulletin: SPSS Collaboration and Deployment Services is affected by multiple vulnerabilities in IBM WebSphere Application Server Liberty
27 Apr 202607:43
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IBM Security Bulletins		Security Bulletin: Investigation Assistant App for IBM QRadar SIEM is vulnerable to using components with known vulnerabilities
5 May 202614:43
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IBM Security Bulletins		Security Bulletin: IBM WebSphere Application Server Liberty, which is bundled with IBM Enterprise Application Runtimes, is affected by a prototype pollution vulnerability due to immutable (CVE-2026-29063)
7 Apr 202614:12
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IBM Security Bulletins		Security Bulletin: Due to the use of WebSphere Application Server Liberty, IBM Tivoli Application Dependency Discovery Manager is affected by a prototype pollution vulnerability due to immutable
22 Jun 202611:29
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IBM Security Bulletins		Security Bulletin: Multiple security vulnerabilities may affect IBM WebSphere Liberty that is shipped with TXSeries for Multiplatforms (CVE-2025-14915, CVE-2025-14917, CVE-2025-14923, CVE-2026-1561, CVE-2026-29063).
7 May 202612:46
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IBM Security Bulletins		Security Bulletin: Multiple vulnerabilities affect Data Virtualization on IBM Software Hub (May 2026)
14 May 202601:21
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IBM Security Bulletins		Security Bulletin: Multiple vulnerabilities in IBM watsonx Orchestrate Developer Edition
7 Apr 202607:08
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10 Apr 2026 05:42Current
5.7Medium risk
Vulners AI Score5.7
CVSS 48.7
EPSS0.00611
Immutable.jsPrototype pollutionMerge deepMergeToJSToObjectPatch
3