CVE-2026-4631 (GCVE-0-2026-4631)

Vulnerability from cvelistv5 – Published: 2026-04-07 16:30 – Updated: 2026-06-29 12:34
VLAI Shadowserver KEVIntel
Title
Cockpit: cockpit: unauthenticated remote code execution due to ssh command-line argument injection
Summary
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.
Severity
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Assigner
References
Impacted products
Vendor Product Version
Red Hat Red Hat Enterprise Linux 10 Unaffected: 0:344-3.el10_1 , < * (rpm)
    cpe:/o:redhat:enterprise_linux:10.1
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Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support Unaffected: 0:334.1-3.el10_0 , < * (rpm)
    cpe:/o:redhat:enterprise_linux_eus:10.0
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Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:344-2.el9_7 , < * (rpm)
    cpe:/o:redhat:enterprise_linux:9::baseos
    cpe:/a:redhat:enterprise_linux:9::appstream
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Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support Unaffected: 0:334.2-2.el9_6 , < * (rpm)
    cpe:/o:redhat:rhel_eus:9.6::baseos
    cpe:/a:redhat:rhel_eus:9.6::appstream
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Red Hat Red Hat Enterprise Linux 7     cpe:/o:redhat:enterprise_linux:7
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Red Hat Red Hat Enterprise Linux 8     cpe:/o:redhat:enterprise_linux:8
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Red Hat Red Hat Enterprise Linux AppStream EUS (v. 10.0)     cpe:/o:redhat:enterprise_linux_eus:10.0
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Red Hat Red Hat Enterprise Linux AppStream (v. 10)     cpe:/o:redhat:enterprise_linux:10.1
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Red Hat Red Hat Enterprise Linux AppStream EUS (v.9.6)     cpe:/a:redhat:rhel_eus:9.6::appstream
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Red Hat Red Hat Enterprise Linux AppStream (v. 9)     cpe:/a:redhat:enterprise_linux:9::appstream
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Red Hat Red Hat Enterprise Linux BaseOS EUS (v. 10.0)     cpe:/o:redhat:enterprise_linux_eus:10.0
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Red Hat Red Hat Enterprise Linux BaseOS (v. 10)     cpe:/o:redhat:enterprise_linux:10.1
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Red Hat Red Hat Enterprise Linux BaseOS EUS (v.9.6)     cpe:/o:redhat:rhel_eus:9.6::baseos
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Red Hat Red Hat Enterprise Linux BaseOS (v. 9)     cpe:/o:redhat:enterprise_linux:9::baseos
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Date Public
2026-04-07 15:52
Credits
Red Hat would like to thank Florian Kohnhäuser for reporting this issue.
Shadowserver
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: ed62bca8-9e0e-49c1-ae3a-cb8ff2fc0f9a

Vulnerability ID: CVE-2026-4631

Status: Confirmed

Status Updated: 2026-07-08 12:18 UTC

Exploited: Yes

Characteristics
Severity: 98.0
Timestamps
First Seen: 2026-07-08
Asserted: 2026-07-08
Last Seen: 2026-07-08
Scope
Asset Exposure: ['internet-facing']
Notes: Affected: Cockpit / Cockpit | Class: device-management-platform | Severity: Critical (CVSS 9.8) | IoT: no | In CISA KEV: no | Honeypot connections on 2026-07-08: 2
Evidence

Type: Honeypot

Signal: In The Wild Attempts

Confidence: 70%

Source: shadowserver

Details
1D 2
Iot no
Feed Shadowserver Foundation honeypot/exploited-vulnerabilities
Type http-scan
Class device-management-platform
7D Avg 0
Vendor Cockpit
30D Avg 0
90D Avg 0
Product Cockpit
Cisa Kev no
Connections 2
Observation Date 2026-07-08
Vulnerability Class CVSS
Vulnerability Score 9.8
Vulnerability Severity Critical
References
Created: 2026-07-10 01:01 UTC | Updated: 2026-07-10 01:01 UTC
KEVIntel
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 68d3f3d4-7e6e-4256-87a0-d668391985aa

Vulnerability ID: CVE-2026-4631

Status: Confirmed

Status Updated: 2026-07-08 00:00 UTC

Exploited: Yes

Timestamps
First Seen: 2026-07-08
Asserted: 2026-07-08
Scope
Notes: Cockpit: cockpit: unauthenticated remote code execution due to ssh command-line argument injection | Affected: Red Hat / Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 10.0 Extended Update Support, Red Hat Enterprise Linux 9, Red Hat Enterprise Linux 9.6 Extended Update Support, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8 | CVSS: 9.8 (CRITICAL) | EPSS: 0.142 | Used in malware: unknown | Not yet in CISA KEV: True
Evidence

Type: Public Report

Signal: Successful Exploitation

Confidence: 70%

Source: kevintel

Details
Feed KEVIntel (kevintel.com)
Title Cockpit: cockpit: unauthenticated remote code execution due to ssh command-line argument injection
Vendor Red Hat
Product Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 10.0 Extended Update Support, Red Hat Enterprise Linux 9, Red Hat Enterprise Linux 9.6 Extended Update Support, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8
Added Date 2026-07-08T00:00:00.000Z
Cvss Score 9.8
Epss Score 0.142
Cvss Severity CRITICAL
Epss Percentile 0.96147
Used In Malware unknown
Ahead Of Cisa Kev None
Not Yet In Cisa Kev True
References
Created: 2026-07-09 09:00 UTC | Updated: 2026-07-10 06:14 UTC
Show details on NVD website
To clipboard 

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}



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Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.