minimist before 1.2.2 could be tricked into adding or modifying properties of Object.prototype using a "constructor" or "__proto__" payload
Unknown · minimist
5.6MediumCVSS 3.1
Recommended action
Within 7 days
Medium technical severity with public exploit material referenced by a structured source; prioritise exposed affected systems while verifying vendor guidance.
Published severityMedium→Operational priority:High, raised one band.upgradedsince 8 Oct 2026
Evidence used
No CISA KEV confirmation is currently recorded.
A structured source references public exploit or proof-of-concept material.
The selected CVSS metric records a network-reachable, unauthenticated path with no user interaction.
EPSS is 1.93% for the current model date.
Compensating controls
Validate the affected product branch and deploy the verified fixed release.
Restrict the affected network interface to trusted sources where business-safe.
Increase monitoring for the attack path and post-exploitation behaviour described in the report.
Verification
Confirm that the asset runs Unknown minimist and falls inside the recorded affected range.
Verify the installed build against the product-specific fixed version after deployment.
Validate exposure, authentication requirements and compensating controls in the actual environment.
Reopen this reassessment when CVSS, KEV, EPSS, exploit evidence or remediation changes.
Distribution package intelligence
Release-specific package status
Debian findings are scoped to the named distribution, release and source package. An absent finding does not mean a package is unaffected.
4 package states
Repository candidate not checked
A published vendor fix does not prove that a matching update is enabled and installable on a particular asset. Confirm the local package candidate before scheduling remediation.
Distribution release
Source package
Vendor state
Fixed version
Evidence
Debian trixietrixie · source
node-minimist
Vendor fix publishedDebian records a fixed source-package version for this release.
These OSV and GitHub advisory ranges apply only to the named package and ecosystem. A listed fixed version is not a universal product patch or proof that an update is installed.
Structured product status and remediation from the issuing vendor. Product-state explanations are always visible; large lists can be searched or downloaded.
1 current
CVE-2020-7598 · CSAF 2.0 · revision 3 · finalRed Hat Product Securitynodejs-minimist: prototype pollution allows adding or modifying properties of Object.prototype using a constructor or __proto__ payload
13 known affected
The vendor explicitly identifies these products as affected by this CVE.
openshift-logging/kibana6-rhel8 as a component of Logging Subsystem for Red Hat OpenShift
kibana as a component of Red Hat OpenShift Container Platform 3.11
kibana.src as a component of Red Hat OpenShift Container Platform 3.11
openshift3/grafana as a component of Red Hat OpenShift Container Platform 3.11
kibana as a component of Red Hat OpenShift Container Platform 4
kibana.src as a component of Red Hat OpenShift Container Platform 4
logging-kibana5-container as a component of Red Hat OpenShift Container Platform 4
openshift4/ose-grafana as a component of Red Hat OpenShift Container Platform 4
openshift4/ose-metering-hadoop as a component of Red Hat OpenShift Container Platform 4
nodejs-minimist.src as a component of Red Hat Quay 3
rh-nodejs10-nodejs-nodemon.src as a component of Red Hat Software Collections
rh-nodejs12-nodejs-nodemon as a component of Red Hat Software Collections
Summary
A flaw was found in nodejs-minimist, where it was tricked into adding or modifying properties of the Object.prototype using a "constructor" or "__proto__" payload. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.
Remediation
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
Optional official sources
National CERT insights ?CERT means Computer Emergency Response Team; CSIRT is the closely related term Computer Security Incident Response Team.
Choose official national sources for this report. Each advisory shows its original language. Your selection is remembered on this device and included in shared links.
Official European source
ENISA European Vulnerability Database
Official EUVD identifiers, advisory evidence and known-exploited context. Missing fields are not treated as evidence of low risk.
1 current
ENISA EUVD identifier
EUVD-2020-0395
No EUVD known-exploited evidence
minimist before 1.2.2 could be tricked into adding or modifying properties of Object.prototype using a "constructor" or "__proto__" payload.
EUVD state
Present in the current official mapping
Known exploitation
Not present in the current ENISA EUVD known-exploited dataset. This is not proof of no exploitation.
ENISA score
0.0
Advisory evidence
No linked advisory details stored yet
Recommended actionWithin 7 days
Medium technical severity with public exploit material referenced by a structured source; prioritise exposed affected systems while verifying vendor guidance.
Patch available
01
What, why and how
minimist before 1.2.2 could be tricked into adding or modifying properties of Object.prototype using a "constructor" or "__proto__" payload.
What
minimist before 1.2.2 could be tricked into adding or modifying properties of Object.prototype using a "constructor" or "__proto__" payload.
Why
The product receives input from an upstream component that specifies attributes that are to be initialized or updated in an object, but it does not properly control modifications of attributes of the object prototype.
How
An attacker operating through a network path may attempt exploitation without authentication or user interaction. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.
What
minimist before 1.2.2 could be tricked into adding or modifying properties of Object.prototype using a "constructor" or "__proto__" payload.
Why
The product receives input from an upstream component that specifies attributes that are to be initialized or updated in an object, but it does not properly control modifications of attributes of the object prototype.
How
An attacker operating through a network path may attempt exploitation without authentication or user interaction. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.
02
Exploit reality and attack path
CVSS severity, EPSS forecast probability, public exploit material and CISA-confirmed exploitation are separate signals.
Observed exploitation ?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.No confirmed evidence
No CISA KEV match was present at the last successful refresh. This means no confirmation from that source, not proof of no exploitation.
Public PoC / exploit material ?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.Reference recorded
A structured CVE source labels at least one public reference as exploit material. BlackTree has not independently validated that it is safe, reliable or weaponised.
Likely attack path
a network path → Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') → cause the confidentiality, integrity or availability impact described by the vendor
Attack surface
Network
Privileges required
None: unauthenticated exploitation is possible
User interaction
None
Attack complexity
High: exploitation depends on specific conditions
Security boundary
Unchanged: impact remains within the vulnerable component's security authority
Weakness ?CWE means Common Weakness Enumeration: a standard category for the underlying weakness.
CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution'). The product receives input from an upstream component that specifies attributes that are to be initialized or updated in an object, but it does not properly control modifications of attributes of the object prototype.
CVSS vector ?CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
Common Vulnerability Scoring System 3.1: the compact vector below is decoded into plain language.
AVNetworkAttack vector: The vulnerable component can be reached over a network.ACHighAttack complexity: Successful exploitation depends on specific conditions outside the attacker's direct control.PRNonePrivileges required: The attacker does not need an account or existing privileges.UINoneUser interaction: No action by another user is required.SUnchangedScope: The security impact remains within the vulnerable component's authority.CLowConfidentiality impact: A successful attack can cause a limited loss.ILowIntegrity impact: A successful attack can cause a limited loss.ALowAvailability impact: A successful attack can cause a limited loss.
Post-exploitation / living off the land
No specific living-off-the-land technique is confirmed in the structured sources. Monitor normal administration tools for activity inconsistent with the affected service's baseline.
Only matched European and national findings are included. Language selectors and unavailable sources are omitted.
ENISA EUVD · EUVD-2020-0395Official EUVD mapping
minimist before 1.2.2 could be tricked into adding or modifying properties of Object.prototype using a "constructor" or "__proto__" payload.
Official EUVD record ↗BSI · German · WID-SEC-2026-4026Red Hat OpenShift: Mehrere Schwachstellen
Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Red Hat OpenShift ausnutzen, um die Vertraulichkeit, Verfügbarkeit und Integrität zu gefährden.
Official advisory ↗Cyber Security Agency of Singapore · English · CSA-SB-20200318Security Bulletin 18 Mar 2020
The Cyber Security Agency of Singapore included this CVE in its official Security Bulletin 18 Mar 2020, published on 18 March 2020. Open the linked bulletin for the product, severity and reference information published in that issue.
Official advisory ↗CERT-FR · French · CERTFR-2026-AVI-1233Multiples vulnérabilités dans les produits IBM
Official advisory ↗CERT-FR · French · CERTFR-2023-AVI-0362Multiples vulnérabilités dans les produits IBM
la confidentialité des données,
une élévation de privilèges, un déni de service à distance et une
injection de code indirecte à distance (XSS).
Solution
Se référer au bulletin de sécurité de l'éditeur pour l'obtention des
correctifs (cf. section Documentation).
Documentation
Bulletin de sécurité IBM 6986505 du 05 mai 2023
https://www.ibm.com/support/pages/node/6986505
Bulletin de sécurité IBM 6987769 du 02 mai 2023
https://www.ibm.com/support/pages/node/6987769
Bulletin de sécurité IBM 6988147 du 05 mai 2023
https://www.ibm.com/support/pages/node/6988147
Référence CVE CVE-2015-5237
https://www.cve.org/CVERecord?id=CVE-2015-5237
Référence CVE CVE-2020-7598
https://www.cve.org/CVERecord?id=CVE-2020-7598
Référence CVE CVE-2020-7789
https://www.cve.org/CVERecord?id=CVE-2020-7789
Référence CVE CVE-2021-22569
https://www.cve.org/CVERecord?id=CVE-2021-22569
Référence CVE CVE-2021-29469
https://www.cve.org/CVERecord?id=CVE-2021-29469
Référence CVE CVE-2021-3516
https://www.cve.org/CVERecord?id=CVE-2021-3516
Référence CVE CVE-2021-3518
https://www.cve.org/CVERecord?id=CVE-2021-3518
Référence CVE CVE-2021-39036
https://www.cve.org/CVERecord?id=CVE-2021-39036
Référence CVE CVE-2021-44906
https://www.cve.org/CVERecord?id=CVE-2021-44906
Référence CVE CVE-2022-0185
https://www.cve.org/CVERecord?id=CVE-2022
Official advisory ↗CERT-FR · French · CERTFR-2023-AVI-0286Multiples vulnérabilités dans les produits IBM
De multiples vulnérabilités ont été découvertes dans les produits IBM . Certaines d'entre elles permettent à un
attaquant de provoquer un problème de sécurité non spécifié par
l'éditeur, une exécution de code arbitraire à distance et un déni de
service à distance.
Official advisory ↗CERT-FR · French · CERTFR-2023-AVI-0263Multiples vulnérabilités dans IBM Cognos
De multiples vulnérabilités ont été découvertes dans IBM Cognos . Elles permettent à un attaquant de
provoquer un contournement de la politique de sécurité, un déni de
service à distance et une exécution de code arbitraire à distance.
Official advisory ↗CERT-FR · French · CERTFR-2022-AVI-928Multiples vulnérabilités dans les produits IBM
Official advisory ↗CERT-FR · French · CERTFR-2022-AVI-889Multiples vulnérabilités dans IBM Security QRadar Analyst Workflow
De multiples vulnérabilités ont été découvertes dans IBM Security QRadar
Analyst Workflow. Certaines d'entre elles permettent à un attaquant de
provoquer une exécution de code arbitraire à distance, un déni de
service à distance et une atteinte à l'intégrité des données.
Official advisory ↗CERT-FR · French · CERTFR-2022-AVI-767Multiples vulnérabilités dans les produits IBM
Operational remediation based on structured source evidence.
Status ?Patch availability is based on structured fixed-version fields and authoritative update references. If no fix is verified, check the vendor advisory before making a change.
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
Workaround
No verified workaround is recorded. If business-safe, reduce exposure to the affected interface and allow only trusted sources until authoritative guidance is available.
04
Evidence and provenance
Published 11 Mar 2020 · Last source change 8 Oct 2026, 21:03 UTC · CWE-1321 · Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
CVE recordCVE.org · 5.2
CVSS sourceNIST NVD
EPSS source ?The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.FIRST · tracked since 2026-08-14
European sourceENISA EUVD · EUVD-2020-0395
Product sourceVendor CSAF · Red Hat Product Security
Remediation sourceVendor CSAF · Red Hat Product Security
CWE sourceNIST NVD
NVD statusNVD modified after enrichment
Missing structured fields: affected product. Missing data is not evidence of low risk; review the primary advisory.
Affected versionsThe structured affected or fixed version information changed.
Before
minimist: All versions prior to version 1.2.2 · Fixed: An authoritative update reference is available, but the fixed version is not recorded in the structured CVE fields. Check the linked vendor advisory for the applicable release.
After
minimist: All versions prior to version 1.2.2 · Fixed: For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
Affected versionsThe structured affected or fixed version information changed.
Before
All versions prior to version 1.2.2 · Fixed: An authoritative update reference is available, but the fixed version is not recorded in the structured CVE fields. Check the linked vendor advisory for the applicable release.
After
minimist: All versions prior to version 1.2.2 · Fixed: An authoritative update reference is available, but the fixed version is not recorded in the structured CVE fields. Check the linked vendor advisory for the applicable release.
Technical terms and abbreviations used in this report
CVE
Common Vulnerabilities and Exposures: the public identifier for one disclosed vulnerability.
CVSS
Common Vulnerability Scoring System: a technical severity framework; it is not patching priority by itself.
EPSS
Exploit Prediction Scoring System: FIRST's estimate of the probability that exploitation activity will be observed in the next 30 days; it is a forecast, not confirmation.
CWE
Common Weakness Enumeration: the standard category describing the underlying software or hardware weakness.
CNA
CVE Numbering Authority: an organisation authorised to assign and publish CVE records.
CISA ADP
Cybersecurity and Infrastructure Security Agency Authorized Data Publisher: structured enrichment added to a CVE record.
NVD
National Vulnerability Database: NIST's enrichment service for CVE records.
CERT / CSIRT
A computer security incident response team that publishes warnings or coordinates incident response.
PoC
Proof of concept: public material that demonstrates or helps reproduce exploitation.
CSAF
Common Security Advisory Framework: a machine-readable format for security advisories.
LoTL
Living off the land: abuse of legitimate tools or system functions during an attack.