CVE-2026-29063
GHSA-wf6x-7x77-mvgw
Lifecycle Timeline
3
Patch Released
Mar 31, 2026 - 21:13 nvd
Patch available
Analysis Generated
Mar 12, 2026 - 22:06 vuln.today
CVE Published
Mar 06, 2026 - 19:16 nvd
N/A
Tags
Description
Immutable.js provides many Persistent Immutable data structures. Prior to versions 3.8.3, 4.3.7, and 5.1.5, Prototype Pollution is possible in immutable via the mergeDeep(), mergeDeepWith(), merge(), Map.toJS(), and Map.toObject() APIs. This issue has been patched in versions 3.8.3, 4.3.7, and 5.1.5.
Analysis
Immutable.js provides many Persistent Immutable data structures. versions up to 3.8.3 is affected by improperly controlled modification of object prototype attributes (prototype pollution).
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Priority Score
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Critical
KEV: 0
EPSS: +0.1
CVSS: +0
POC: 0
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