CVE-2026-29063

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Source
https://cve.org/CVERecord?id=CVE-2026-29063
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-29063.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-29063
Aliases
Downstream
Related
Published
2026-03-06T18:25:22.438Z
Modified
2026-03-14T12:48:15.305291Z
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 
{
    "cwe_ids": [
        "CWE-1321"
    ],
    "cna_assigner": "GitHub_M",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/29xxx/CVE-2026-29063.json"
}
References

Affected packages

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

Affected ranges

Type
GIT
Repo
https://github.com/immutable-js/immutable-js
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
c4074256bf48ab372fdad2b3d47db89306a5211e
Type
GIT
Repo
https://github.com/immutable-js/immutable-js
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
485cbe0edf3ca7bb4b9c4a80ac55ba937a291da0
Type
GIT
Repo
https://github.com/immutable-js/immutable-js
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
b37b85568632227751ddc8a16034cacc0f42b652

Affected versions

2.*
2.0.10
2.0.11
2.0.12
2.0.13
2.0.14
2.0.15
2.0.16
2.0.17
2.0.4
2.0.5
2.0.6
2.0.7
2.0.8
2.0.9
2.1.0
2.2.0
2.2.1
2.2.2
2.3.0
2.3.1
2.3.2
2.5.0
2.5.1
2.6.0
2.6.1
2.6.2
3.*
3.0.0
3.0.1
3.0.2
3.0.3
3.1.0
3.2.0
3.2.1
3.3.0
3.4.0
3.4.1
3.5.0
3.6.0
3.6.1
3.6.2
3.6.3
3.6.4
3.7.0
3.7.1
3.7.2
3.7.3
3.7.4
3.7.5
3.7.6
v3.*
v3.8.0
v3.8.1
v3.8.2
v4.*
v4.0.0
v4.0.0-rc.1
v4.0.0-rc.10
v4.0.0-rc.11
v4.0.0-rc.12
v4.0.0-rc.13
v4.0.0-rc.14
v4.0.0-rc.15
v4.0.0-rc.2
v4.0.0-rc.3
v4.0.0-rc.4
v4.0.0-rc.6
v4.0.0-rc.7
v4.0.0-rc.8
v4.0.0-rc.9
v4.2.0
v4.2.1
v4.2.2
v4.3.0
v4.3.1
v4.3.3
v4.3.4
v4.3.5
v4.3.6
v4.3.7
v5.*
v5.0.0
v5.0.0-beta.2
v5.0.0-beta.4
v5.0.0-beta.5
v5.0.0-rc.2
v5.0.1
v5.0.2
v5.1.1
v5.1.2
v5.1.3
v5.1.4

Database specific

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