Prototype pollution in immer
Priority LOW 37CWE-471Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Partial Red Hat: 1 fixed, 1 without a fix
Attack profile from CVSS 3.1 · CNA. Fix status from CNA, GitHub and Red Hat.
Summary
This affects all versions of package immer.
Why it matters now
EPSS 0.02341 83rd percentileScored 2026-11-07
Fix Partial immer (npm): 8.0.1Red Hat: 1 advisoryRed Hat: 1 fixed, 1 without a fix
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | immer | all versions | — | No fix listed | CNA |
| — | immer (npm) | 7.0.0 to before 8.0.1 | 8.0.1 | Patch available | GHSA-9qmh-276g-x5pj |
- immer Vendor— Affected all versions Fixed in — No fix listed CNA
- immer (npm) Vendor— Affected 7.0.0 to before 8.0.1 Fixed in 8.0.1 Patch available GHSA-9qmh-276g-x5pj
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:immer_project:immer:*:*:*:*:*:node.js:*:* | before 8.0.1 | Vulnerable | Immer Project |
- cpe:2.3:a:immer_project:immer:*:*:*:*:*:node.js:*:* Versions before 8.0.1 Vulnerable ·Immer Project
Remediation
- Fix · GHSA-9qmh-276g-x5pj immer (npm) Fixed in 8.0.1 Advisory →
Red Hat 1 advisory
- RHSA-2021:1169 Released 2021-04-14 · Red Hat rating ModerateRHV Manager (ovirt-engine) 4.4.z [ovirt-4.4.5] security, bug fix, enhancement
- RHEL-8-RHEV-S-4.4 - Red Hat Virtualization Engine 4.4 ovirt-engine-4.4.5.9-0.1.el8ev, ovirt-engine-backend-4.4.5.9-0.1.el8ev, ovirt-engine-dbscripts-4.4.5.9-0.1.el8ev +18
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat OpenShift Container Platform 4 | Affected | No fix yet: Fix deferred |
| RHEL-8-RHEV-S-4.4 - Red Hat Virtualization Engine 4.4 | Fixed | RHSA-2021:1169 |
Not affected: 6 products
- OpenShift Service Mesh 1
- OpenShift Service Mesh 2.0
- RHEL-8-RHEV-S-4.4 - Red Hat Virtualization Engine 4.4
- Red Hat Advanced Cluster Management for Kubernetes 2
- Red Hat OpenShift Container Platform 3.11
- Red Hat OpenShift Container Platform 4
Timeline
- 2026-10-02 Threatist record created from CVE-2020-28477
- 2026-10-03 Alias added: GHSA-9qmh-276g-x5pj
References
More Immer Project Immer vulnerabilities
- TI-2021-06128 Prototype pollution in immer CVSS 3.1CRITICAL 9.8
- TI-2021-02689 Prototype Pollution in immerjs/immer CVSS 3.1CRITICAL 9.8
Sources
- CVE-2020-28477 · CVE Program
- CVE-2020-28477 · NVD
- FIRST EPSS
- GHSA-9qmh-276g-x5pj · GitHub Advisory Database · CC BY 4.0
- CVE-2020-28477 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences