> CVE-2026-4631 [CRITICAL]

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PUBLISHED
2026-04-07 17:16
MODIFIED
2026-04-07 17:16
CVSS_SCORE V3
9.8
EPSS (Prob. Exploit)
15.48%
Top 3.2%
⚡ EPSS ÉLEVÉ (15.5%)
🎯 NUCLEI TEMPLATE
DATA SOURCES:
NVD 🔗 2026-04-07 RED HAT 🔗 2026-04-12 CWE MITRE 🔗 2026-11-01 FIRST EPSS 🔗 2026-11-08 NUCLEI 🔗 2026-05-07

> DESCRIPTION

Cockpit's remote login feature passes user-supplied hostnames and usernames from the web interface to the SSH client without validation or sanitization. An attacker with network access to the Cockpit web service can craft a single HTTP request to the login endpoint that injects malicious SSH options or shell commands, achieving code execution on the Cockpit host without valid credentials. The injection occurs during the authentication flow before any credential verification takes place, meaning no login is required to exploit the vulnerability.

> AFFECTED_PRODUCTS

Red Hat - Red Hat Enterprise Linux 10
Version: 344
Red Hat - Red Hat Enterprise Linux 9
Version: 344
Red Hat - Red Hat Enterprise Linux 10.0 Extended Update Support
Version: 334.1
Red Hat - Red Hat Enterprise Linux 9.6 Extended Update Support
Version: 334.2

> CVSS V3 METRICS

CVSS_VECTOR
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EXPLOITABILITY
3.9
IMPACT
5.9

> MÉTRIQUES CVSS DÉTAILLÉES

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Métrique Valeur Interprétation
AV (Vecteur d'Attaque)
Attack Vector
Network (N)
Exploit possible à distance via réseau (HTTP, API, etc.)
AC (Complexité d'Attaque)
Attack Complexity
Low (L)
Peu de conditions requises pour exploiter
PR (Privilèges Requis)
Privileges Required
None (N)
Aucune authentification requise
UI (Interaction Utilisateur)
User Interaction
None (N)
Aucune interaction utilisateur nécessaire
S (Périmètre)
Scope
Unchanged (U)
Impact reste dans le périmètre du composant compromis
C (Impact Confidentialité)
Confidentiality Impact
High (H)
Divulgation totale d'informations
I (Impact Intégrité)
Integrity Impact
High (H)
Modification totale des données possible
A (Impact Disponibilité)
Availability Impact
High (H)
Interruption totale du service possible

> RÉSUMÉ DES IMPACTS

Confidentialité
High
Divulgation totale d'informations
Intégrité
High
Modification totale des données possible
Disponibilité
High
Interruption totale du service possible

> WEAKNESSES

CWE-78

> CWE DETAILED DESCRIPTIONS

CWE-78: Improper Neutralization of Special Elements used in an OS Command - The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command before it is sent to a downstream component.

> RED HAT SECURITY ADVISORIES

Red Hat Security Advisory: cockpit: Unauthenticated remote code execution due to SSH command-line argument injection
An update for cockpit is now available for Red Hat Enterprise Linux 9.6 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Critical. A Common Vulne...
Red Hat Security Advisory: cockpit: Unauthenticated remote code execution due to SSH command-line argument injection
An update for cockpit is now available for Red Hat Enterprise Linux 9. Red Hat Product Security has rated this update as having a security impact of Critical. A Common Vulnerability Scoring System (C...
Red Hat Security Advisory: cockpit: Unauthenticated remote code execution due to SSH command-line argument injection
An update for cockpit is now available for Red Hat Enterprise Linux 10. Red Hat Product Security has rated this update as having a security impact of Critical. A Common Vulnerability Scoring System (...
Red Hat Security Advisory: cockpit: Unauthenticated remote code execution due to SSH command-line argument injection
An update for cockpit is now available for Red Hat Enterprise Linux 10. Red Hat Product Security has rated this update as having a security impact of Critical. A Common Vulnerability Scoring System (...

> RED HAT SEVERITY ASSESSMENT

THREAT SEVERITY
Critical

> NUCLEI TEMPLATES

Des templates Nuclei sont disponibles pour scanner cette vulnérabilité.

🎯
CVE-2026-4631.yaml
http/cves/2026/CVE-2026-4631.yaml
Usage: nuclei -t http/cves/2026/CVE-2026-4631.yaml -u target.com

> HISTORIQUE DES MODIFICATIONS

Première apparition
07/04/2026 17:16
Source: NVD
📊 ENRICHISSEMENT 01/11/2026 06:59
CWE
Champ modifié: Description CWE
Ancienne valeur:
CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') - The product constructs all or part of an OS command using externally-influenced input from an upstr...
Nouvelle valeur:
CWE-78: Improper Neutralization of Special Elements used in an OS Command - The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it doe...
📊 ENRICHISSEMENT 01/05/2026 06:01
CWE
Champ modifié: Description CWE
Ancienne valeur:
N/A
Nouvelle valeur:
CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') - The product constructs all or part of an OS command using externally-influenced input from an upstr...
📊 ENRICHISSEMENT 12/04/2026 05:01
REDHAT
Champ modifié: Sévérité Red Hat
Ancienne valeur:
{ "severity_scale": null, "threat_severity": "Critical" }
Nouvelle valeur:
{ "threat_severity": "Critical", "severity_scale": null }
📊 ENRICHISSEMENT 08/04/2026 23:30
REDHAT
Champ modifié: Sévérité Red Hat
Ancienne valeur:
{ "severity_scale": null, "threat_severity": "Critical" }
Nouvelle valeur:
{ "threat_severity": "Critical", "severity_scale": null }
📊 ENRICHISSEMENT 08/04/2026 22:30
REDHAT
Champ modifié: Sévérité Red Hat
Ancienne valeur:
{ "severity_scale": null, "threat_severity": "Critical" }
Nouvelle valeur:
{ "threat_severity": "Critical", "severity_scale": null }
📊 ENRICHISSEMENT 08/04/2026 21:30
REDHAT
Champ modifié: Sévérité Red Hat
Ancienne valeur:
{ "severity_scale": null, "threat_severity": "Critical" }
Nouvelle valeur:
{ "threat_severity": "Critical", "severity_scale": null }
📊 ENRICHISSEMENT 08/04/2026 20:30
REDHAT
Champ modifié: Sévérité Red Hat
Ancienne valeur:
{ "severity_scale": null, "threat_severity": "Critical" }
Nouvelle valeur:
{ "threat_severity": "Critical", "severity_scale": null }
📊 ENRICHISSEMENT 08/04/2026 19:30
REDHAT
Champ modifié: Sévérité Red Hat
Ancienne valeur:
{ "severity_scale": null, "threat_severity": "Critical" }
Nouvelle valeur:
{ "threat_severity": "Critical", "severity_scale": null }
📊 ENRICHISSEMENT 08/04/2026 18:30
REDHAT
Champ modifié: Sévérité Red Hat
Ancienne valeur:
{ "severity_scale": null, "threat_severity": "Critical" }
Nouvelle valeur:
{ "threat_severity": "Critical", "severity_scale": null }
📊 ENRICHISSEMENT 08/04/2026 17:30
REDHAT
Champ modifié: Sévérité Red Hat
Ancienne valeur:
{ "severity_scale": null, "threat_severity": "Critical" }
Nouvelle valeur:
{ "threat_severity": "Critical", "severity_scale": null }
📊 ENRICHISSEMENT 08/04/2026 16:30
REDHAT
Champ modifié: Sévérité Red Hat
Ancienne valeur:
{ "severity_scale": null, "threat_severity": "Critical" }
Nouvelle valeur:
{ "threat_severity": "Critical", "severity_scale": null }
📊 ENRICHISSEMENT 08/04/2026 15:30
REDHAT
Champ modifié: Sévérité Red Hat
Ancienne valeur:
{ "severity_scale": null, "threat_severity": "Critical" }
Nouvelle valeur:
{ "threat_severity": "Critical", "severity_scale": null }
📊 ENRICHISSEMENT 08/04/2026 14:30
REDHAT
Champ modifié: Sévérité Red Hat
Ancienne valeur:
{ "severity_scale": null, "threat_severity": "Critical" }
Nouvelle valeur:
{ "threat_severity": "Critical", "severity_scale": null }
📊 ENRICHISSEMENT 08/04/2026 13:30
REDHAT
Champ modifié: Sévérité Red Hat
Ancienne valeur:
{ "severity_scale": null, "threat_severity": "Critical" }
Nouvelle valeur:
{ "threat_severity": "Critical", "severity_scale": null }
📊 ENRICHISSEMENT 08/04/2026 12:30
REDHAT
Champ modifié: Sévérité Red Hat
Ancienne valeur:
{ "severity_scale": null, "threat_severity": "Critical" }
Nouvelle valeur:
{ "threat_severity": "Critical", "severity_scale": null }
📊 ENRICHISSEMENT 08/04/2026 11:30
REDHAT
Champ modifié: Sévérité Red Hat
Ancienne valeur:
{ "severity_scale": null, "threat_severity": "Critical" }
Nouvelle valeur:
{ "threat_severity": "Critical", "severity_scale": null }
📊 ENRICHISSEMENT 08/04/2026 10:30
REDHAT
Champ modifié: Sévérité Red Hat
Ancienne valeur:
{ "severity_scale": null, "threat_severity": "Critical" }
Nouvelle valeur:
{ "threat_severity": "Critical", "severity_scale": null }
📊 ENRICHISSEMENT 08/04/2026 09:30
REDHAT
Champ modifié: Sévérité Red Hat
Ancienne valeur:
{ "severity_scale": null, "threat_severity": "Critical" }
Nouvelle valeur:
{ "threat_severity": "Critical", "severity_scale": null }
📊 ENRICHISSEMENT 08/04/2026 08:30
REDHAT
Champ modifié: Sévérité Red Hat
Ancienne valeur:
{ "severity_scale": null, "threat_severity": "Critical" }
Nouvelle valeur:
{ "threat_severity": "Critical", "severity_scale": null }
📊 ENRICHISSEMENT 08/04/2026 07:30
REDHAT
Champ modifié: Sévérité Red Hat
Ancienne valeur:
{ "severity_scale": null, "threat_severity": "Critical" }
Nouvelle valeur:
{ "threat_severity": "Critical", "severity_scale": null }
📊 ENRICHISSEMENT 08/04/2026 06:30
REDHAT
Champ modifié: Sévérité Red Hat
Ancienne valeur:
{ "severity_scale": null, "threat_severity": "Critical" }
Nouvelle valeur:
{ "threat_severity": "Critical", "severity_scale": null }
📊 ENRICHISSEMENT 08/04/2026 05:30
REDHAT
Champ modifié: Sévérité Red Hat
Ancienne valeur:
{ "severity_scale": null, "threat_severity": "Critical" }
Nouvelle valeur:
{ "threat_severity": "Critical", "severity_scale": null }
📊 ENRICHISSEMENT 08/04/2026 04:30
REDHAT
Champ modifié: Sévérité Red Hat
Ancienne valeur:
{ "severity_scale": null, "threat_severity": "Critical" }
Nouvelle valeur:
{ "threat_severity": "Critical", "severity_scale": null }
📊 ENRICHISSEMENT 08/04/2026 03:30
REDHAT
Champ modifié: Sévérité Red Hat
Ancienne valeur:
{ "severity_scale": null, "threat_severity": "Critical" }
Nouvelle valeur:
{ "threat_severity": "Critical", "severity_scale": null }
📊 ENRICHISSEMENT 08/04/2026 02:30
REDHAT
Champ modifié: Sévérité Red Hat
Ancienne valeur:
{ "severity_scale": null, "threat_severity": "Critical" }
Nouvelle valeur:
{ "threat_severity": "Critical", "severity_scale": null }
📊 ENRICHISSEMENT 08/04/2026 01:30
REDHAT
Champ modifié: Sévérité Red Hat
Ancienne valeur:
{ "severity_scale": null, "threat_severity": "Critical" }
Nouvelle valeur:
{ "threat_severity": "Critical", "severity_scale": null }
📊 ENRICHISSEMENT 08/04/2026 00:30
REDHAT
Champ modifié: Sévérité Red Hat
Ancienne valeur:
N/A
Nouvelle valeur:
{ "threat_severity": "Critical", "severity_scale": null }
📊 ENRICHISSEMENT 08/04/2026 00:30
REDHAT
Champ modifié: Red Hat
Ancienne valeur:
Non
Nouvelle valeur:
Oui
Total des modifications: 28 Dernière mise à jour: 1 week ago

> REFERENCES

https://access.redhat.com/security/cve/CVE-2026-4631
https://bugzilla.redhat.com/show_bug.cgi?id=2450246
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