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
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| immutable-js | immutable-js | < 3.8.3, < 4.3.7, < 5.1.5 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | node-immutable | 4.3.8-1 | — |
| Debian 13 | node-immutable | No fix yet | — |
| Debian 12 | node-immutable | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.04 LTS | node-immutable | No fix yet | — |
| Ubuntu 25.10 | node-immutable | No fix yet | — |
| Ubuntu 24.04 LTS | node-immutable | No fix yet | — |
| Ubuntu 22.04 LTS | node-immutable | No fix yet | — |
| Ubuntu 20.04 LTS | node-immutable | No fix yet | — |
Wolfi
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Wolfi rolling | argo-workflows-ui-4.0 | 4.0.1-r4 | — |
| Wolfi rolling | katib-earlystopping +8 | 0.19.0-r31 | — |
| Wolfi rolling | katib-suggestion-goptuna-compat | 0.19.0-r40 | — |
| Wolfi rolling | rancher-api-ui | 1.2.3-r6 | — |
| Wolfi rolling | vitess-23 | 23.0.3-r7 | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| npm | immutable | >= 4.0.0-rc.1, < 4.3.8 | 4.3.8 | GHSA-wf6x-7x77-mvgw |
| npm | immutable | >= 5.0.0, < 5.1.5 | 5.1.5 | GHSA-wf6x-7x77-mvgw |
| npm | immutable | < 3.8.3 | 3.8.3 | GHSA-wf6x-7x77-mvgw |
Advisories 7
- WID-SEC-2026-3046 IBM Concert: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 10, 2026
- WID-SEC-2026-2933 Splunk SOAR: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 2, 2026
- WID-SEC-2026-1007 IBM App Connect Enterprise: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 25, 2026
- WID-SEC-2026-1367 Red Hat Advanced Cluster Management und Multicluster engine for Kubernetes: Schwachstelle ermöglicht Codeausführung oder DoS BSI CERT-Bund (WID) · Oct 15, 2026
- WID-SEC-2026-2460 Atlassian Bamboo, Bitbucket, Confluence, Fisheye, Crucible, Jira und Jira Service Management: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 1, 2026
- WID-SEC-2026-0845 IBM WebSphere Application Server Liberty: Mehrere Schwachstellen BSI CERT-Bund (WID) · Sep 28, 2026
- WID-SEC-2026-1229 Atlassian Bamboo, Bitbucket, Confluence, Jira: Mehrere Schwachstellen BSI CERT-Bund (WID) · Aug 2, 2026