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Hat","versions":[{"lessThan":"*","status":"unaffected","version":"0:311.3-1.el9_4","versionType":"rpm"}]},{"defaultStatus":"affected","ecosystem":"https://access.redhat.com/downloads/content/package-browser/","packageName":"cockpit","product":"Red Hat Enterprise Linux 9.6 Extended Update Support","source":"ADP: redhat-SADP","vendor":"Red Hat","versions":[{"lessThan":"*","status":"unaffected","version":"0:334.3-1.el9_6","versionType":"rpm"}]},{"defaultStatus":"unaffected","ecosystem":"https://access.redhat.com/downloads/content/package-browser/","packageName":"cockpit","product":"Red Hat Enterprise Linux 7","source":"ADP: redhat-SADP","vendor":"Red Hat","versions":[]}],"cveId":"CVE-2026-4802","cwes":["CWE-78"],"description":"A flaw was found in Cockpit. This vulnerability allows a remote attacker to achieve arbitrary command execution on the host by exploiting unsanitized user-controlled parameters within crafted links in the system logs user interface (UI). An attacker can inject shell metacharacters and command substitutions into these parameters, leading to the execution of arbitrary shell commands on the affected system. This could result in a complete system compromise.","epss":{"date":"2026-11-04","percentile":0.63401,"score":0.01016},"exploits":[],"kev":null,"metrics":[{"score":8,"severity":"high","source":"CNA: redhat","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H","version":"3.1"},{"score":8,"severity":"high","source":"ADP: redhat-SADP","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H","version":"3.1"},{"score":8,"severity":"high","source":"NVD: secalert@redhat.com","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H","version":"3.1"},{"score":8,"severity":"high","source":"NVD: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H","version":"3.1"}],"modifiedAt":1793834258973,"publishedAt":1778503688657,"references":[{"source":"CNA: redhat","tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:21390"},{"source":"CNA: 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redhat","text":"Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.\n\nOperational risk reduction until fixes are available: restrict access to Cockpit to trusted networks/users only, and avoid opening untrusted crafted Cockpit URLs"},{"kind":"fix","source":"ADP: redhat-SADP","text":"RHSA-2026:21390: Red Hat Enterprise Linux AppStream EUS (v. 10.0), Red Hat Enterprise Linux BaseOS EUS (v. 10.0)\n\nRHSA-2026:21676: Red Hat Enterprise Linux AppStream (v. 10), Red Hat Enterprise Linux BaseOS (v. 10)\n\nRHSA-2026:21395: Red Hat Enterprise Linux AppStream E4S (v.9.0), Red Hat Enterprise Linux BaseOS E4S (v.9.0)\n\nRHSA-2026:21394: Red Hat Enterprise Linux AppStream E4S (v.9.2), Red Hat Enterprise Linux BaseOS E4S (v.9.2)\n\nRHSA-2026:21647: Red Hat Enterprise Linux AppStream EUS (v.9.4), Red Hat Enterprise Linux BaseOS EUS (v.9.4)\n\nRHSA-2026:21392: Red Hat Enterprise Linux AppStream EUS (v.9.6), Red Hat Enterprise Linux BaseOS EUS (v.9.6)\n\nRHSA-2026:21468: Red Hat Enterprise Linux AppStream (v. 9), Red Hat Enterprise Linux BaseOS (v. 9)\n\nRHSA-2026:21700: Red Hat Enterprise Linux BaseOS (v. 8)\n\nRHSA-2026:21516: Red Hat Enterprise Linux BaseOS AUS (v.8.6), Red Hat Enterprise Linux BaseOS E4S (v.8.6), Red Hat Enterprise Linux BaseOS TUS (v.8.6)\n\nRHSA-2026:21515: Red Hat Enterprise Linux BaseOS E4S (v.8.8), Red Hat Enterprise Linux BaseOS TUS (v.8.8)"},{"kind":"workaround","source":"ADP: redhat-SADP","text":"Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.\n\nOperational risk reduction until fixes are available: restrict access to Cockpit to trusted networks/users only, and avoid opening untrusted crafted Cockpit URLs"}],"revision":"8339697a2412f8b9342f8abf7c85c168e84b3924431aaa145eba4521049e4c28","sources":[{"modifiedAt":1793832111106,"name":"CNA: redhat","retrievedAt":1793833860431,"url":"https://www.cve.org/CVERecord?id=CVE-2026-4802"},{"modifiedAt":1793834258973,"name":"NVD","retrievedAt":1793838007492,"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-4802"},{"modifiedAt":null,"name":"FIRST EPSS","retrievedAt":1793833885761,"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-4802"}],"ssvc":{"assessedAt":1778457600000,"automatable":"no","exploitation":"none","source":"ADP: CISA-ADP","technicalImpact":"total"},"status":"published","title":"Cockpit: cockpit: arbitrary command execution via crafted links in system logs ui","updatedAt":1793838007492}