CVE-2026-29063

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Source
https://cve.org/CVERecord?id=CVE-2026-29063
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-29063.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2026-29063
Aliases
Downstream
Related
Published
2026-03-06T18:25:22.438Z
Modified
2026-05-18T05:59:46.198940107Z
Severity
  • 8.7 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N CVSS Calculator
Summary
Immutable.js: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') in immutable
Details

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.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/29xxx/CVE-2026-29063.json",
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-1321"
    ]
}
References

Affected packages

Git / github.com/immutable-js/immutable-js

Affected ranges

Type
GIT
Repo
https://github.com/immutable-js/immutable-js
Events
Introduced
c90cdc263d94553b2439bbff4f761f4df7f361af
Fixed
b37b85568632227751ddc8a16034cacc0f42b652

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-29063.json"