CVE-2026-4631

criticalpriority · track · 15EPSS 0.155 · 97 %ileexploit · PoCDEEURUUS

grimoire priorityP1 · Urgent

Exploitable?

Public exploit

3 exploits · PoC

Likely / severe?

15.5% (97th) EPSS

CVSS 9.8 · critical

Is it mine?

15 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-26

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.

cvss

Technical severity, 0–10. One row per scoring source.

9.8

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.19.8criticalAV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · ENISA EU

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · secalert@redhat.com USexploitability 3.9 · impact 5.9

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondaryexploitability 3.9 · impact 5.9

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-78USCWE-78US

exploits (3)

Public proof-of-concept and weaponised exploit code.

EDB-52572Cockpit 359 - RCEPoC · exploit_db
ExDev994/CVE-2026-4631-cockpit-RCEUnauthenticated Remote Code Execution via SSH Command-Line Argument Injection Cockpit versions 327 – 359 | CVSS 9.8 Critical | CWE-78PoC · poc_in_github
cyberheartmi9/CVE-2026-4631-cockpit-RCECockpit: Unauthenticated Remote Code Execution via SSH Command-Line Argument InjectionPoC · poc_in_github

affected products (15)

Products and version ranges known to be affected.

Oracle Linuxall versionscert_bundDEcpe:/o:oracle:linux:-
RESF Rocky Linuxall versionscert_bundDEcpe:/o:resf:rocky_linux:-
Red Hat Enterprise Linux 10all versionscert_bundDEcpe:/o:redhat:enterprise_linux:10
Red Hat Enterprise Linux 9.6all versionscert_bundDEcpe:/o:redhat:enterprise_linux:9.6
SUSE Linuxall versionscert_bundDEcpe:/o:suse:suse_linux:-
Red Hat Red Hat Enterprise Linux 10< 0:344-3.el10_1enisa_euvdEU
Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support< 0:334.1-3.el10_0enisa_euvdEU
Red Hat Red Hat Enterprise Linux 9< 0:344-2.el9_7enisa_euvdEU
Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support< 0:334.2-2.el9_6enisa_euvdEU
Red Hat Inc. Red Hat Enterprise Linux≤ 9fstec_bduRU
Red Hat Inc. Red Hat Enterprise Linux≤ 9.6 Extended Update Supportfstec_bduRU
Red Hat Inc. Red Hat Enterprise Linux≤ 10fstec_bduRU
Red Hat Inc. Red Hat Enterprise Linux≤ 10.0 Extended Update Supportfstec_bduRU
Сообщество свободного программного обеспечения Debian GNU/Linux≤ 13fstec_bduRU
Сообщество свободного программного обеспечения cockpit≤ 360fstec_bduRU

advisories (1)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2026-1052Red Hat Enterprise Linux (Cockpit): Schwachstelle ermöglicht CodeausführungDeutsch2026-04-12csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann eine Schwachstelle in Red Hat Enterprise Linux ausnutzen, um beliebigen Programmcode auszuführen.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cert_bund NVD CVE.org MITRE

published 2026-04-07modified 2026-10-26

references (22)

External citations — patches, advisories, analysis.

scry

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