HIGH SeverityCVSS 4.08.7CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

CVE-2026-29063

Last updated Mar 06, 2026 · Published Mar 06, 2026

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.

Affected products

1 listed

immutable-js:immutable-js

Mappings

CWE

CWE-1321

CAPEC

None listed.