CVE-2026-4802

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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."}, {"lang": "es", "value": "Se encontr\u00f3 un fallo en Cockpit. Esta vulnerabilidad permite a un atacante remoto lograr la ejecuci\u00f3n arbitraria de comandos en el host al explotar par\u00e1metros controlados por el usuario no saneados dentro de enlaces manipulados en la interfaz de usuario (UI) de los registros del sistema. Un atacante puede inyectar metacaracteres de shell y sustituciones de comandos en estos par\u00e1metros, lo que lleva a la ejecuci\u00f3n de comandos de shell arbitrarios en el sistema afectado. Esto podr\u00eda resultar en un compromiso completo del sistema."}], "id": "CVE-2026-4802", "lastModified": "2026-11-04T23:17:38.973", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.0, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.1, "impactScore": 5.9, "source": "secalert@redhat.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.0, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.1, "impactScore": 5.9, "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-4802", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-05-11T00:00:00+00:00", "version": "2.0.3"}}]}, "published": "2026-05-11T14:16:31.550", "references": [{"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2026:21390"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2026:21392"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2026:21394"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2026:21395"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2026:21468"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2026:21515"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2026:21516"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2026:21647"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2026:21676"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2026:21700"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/security/cve/CVE-2026-4802"}, {"source": "secalert@redhat.com", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2451155"}, {"source": "secalert@redhat.com", "url": "https://github.com/cockpit-project/cockpit/blob/e204cd130/pkg/systemd/logsJournal.jsx#L206-L210"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.openwall.com/lists/oss-security/2026/05/20/19"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "url": "https://access.redhat.com/errata/RHSA-2026:21390"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "url": "https://access.redhat.com/errata/RHSA-2026:21392"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "url": "https://access.redhat.com/errata/RHSA-2026:21394"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "url": "https://access.redhat.com/errata/RHSA-2026:21395"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "url": "https://access.redhat.com/errata/RHSA-2026:21468"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "url": "https://access.redhat.com/errata/RHSA-2026:21515"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "url": "https://access.redhat.com/errata/RHSA-2026:21516"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "url": "https://access.redhat.com/errata/RHSA-2026:21647"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "url": "https://access.redhat.com/errata/RHSA-2026:21676"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "url": "https://access.redhat.com/errata/RHSA-2026:21700"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "url": "https://access.redhat.com/security/cve/CVE-2026-4802"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2451155"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-4802.json"}], "sourceIdentifier": "secalert@redhat.com", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-78"}], "source": "secalert@redhat.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-78"}], "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "type": "Secondary"}]}

{"acknowledgement": "Red Hat would like to thank Gabriel Rodrigues (HAKAI) for reporting this issue.", "bugzilla": {"description": "cockpit: Cockpit: Arbitrary command execution via crafted links in system logs UI", "id": "2451155", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2451155"}, "csaw": false, "cvss3": {"cvss3_base_score": "8.0", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-78", "details": ["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."], "mitigation": {"lang": "en:us", "value": "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.\nOperational risk reduction until fixes are available: restrict access to Cockpit to trusted networks/users only, and avoid opening untrusted crafted Cockpit URLs"}, "name": "CVE-2026-4802", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Affected", "package_name": "cockpit", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Affected", "package_name": "cockpit", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "cockpit", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "cockpit", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-05-11T12:34:26Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-4802\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-4802\nhttps://github.com/cockpit-project/cockpit/blob/e204cd130/pkg/systemd/logsJournal.jsx#L206-L210"], "statement": "An Important arbitrary command execution flaw exists in Cockpit's system logs UI. This vulnerability allows a remote attacker to execute arbitrary commands on the host by exploiting unsanitized user-controlled parameters within crafted links. This impacts Red Hat Enterprise Linux systems where Cockpit is installed and accessible.", "threat_severity": "Important"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": null}], "enrichment": {"confidence": 100.0, "confidence_source": "manual", "scores": [{"score": 100.0, "source": "manual"}]}, "original": {"product": "Red Hat Enterprise Linux 10", "source": "cna", "vendor": "Red Hat"}, "product": "enterprise_linux", "vendor": "redhat"}], "created": "2026-05-11T17:15:40.097833+00:00", "updated": "2026-05-12T09:23:13.997009+00:00", "vendors": ["redhat", "redhat$PRODUCT$enterprise_linux"]}