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CVE-2020-28477

25
FAUCET Score

CVE-2020-28477 is a high-severity vulnerability affecting all versions of the immer package, which could lead to a denial of service. The vulnerability has a CVSS score of 7.5, indicating it can be exploited remotely with low attack complexity and no user interaction, resulting in high availability impact. Despite its severity, there is no evidence of active exploitation, publicly available exploit code, or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 8.0.1CPE matchmatch criteria
cpe:2.3:a:immer_project:immer:*:*:*:*:*:node.js:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.29%
Probability of exploitation in next 30 days
EPSS Percentile
81.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0229 is in the 67th percentile among its peer group of 51,455 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (3)

npmpatch availablevia ghsa
Product: immerFixed in: 8.0.1
redhatpatch availablevia redhat_api
Product: Red Hat Virtualization Engine 4.4Fixed in: ovirt-web-ui-0:1.6.7-1.el8ev
View patch
redhatvendor investigatingvia redhat_api
Product: Red Hat OpenShift Container Platform 4Fixed in: openshift4/ose-prometheus-rhel9

Vendor Advisories (2)

npmGHSA-9qmh-276g-x5pjhigh

Prototype Pollution in immer

Jan 20, 2021
redhatCVE-2020-28477Moderate

nodejs-immer: prototype pollution may lead to DoS or remote code execution

Jan 19, 2021

References

github.com / immerjs/immer/blob/master/src/plugins/patches.ts%23L213
Broken Link
snyk.io / vuln/SNYK-JAVA-ORGWEBJARSNPM-1061986
ExploitThird Party Advisory
snyk.io / vuln/SNYK-JS-IMMER-1019369
ExploitThird Party Advisory