CVE-2026-4802: high-severity vulnerability in Red Hat Enterprise Linux 10
Cockpit: cockpit: arbitrary command execution via crafted links in system logs ui
Published · Updated
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8epss 1.0%
from disclosure to weaponsame day
Published on NVDMay 11
1st PoCMay 11
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.
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
Affected products
Red Hat · Red Hat Enterprise Linux 10Red Hat · Red Hat Enterprise Linux 10.0 Extended Update SupportRed Hat · Red Hat Enterprise Linux 7Red Hat · Red Hat Enterprise Linux 8Red Hat · Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update SupportRed Hat · Red Hat Enterprise Linux 8.6 Telecommunications Update ServiceRed Hat · Red Hat Enterprise Linux 8.6 Update Services for SAP SolutionsRed Hat · Red Hat Enterprise Linux 8.8 Telecommunications Update ServiceRed Hat · Red Hat Enterprise Linux 8.8 Update Services for SAP SolutionsRed Hat · Red Hat Enterprise Linux 9Red Hat · Red Hat Enterprise Linux 9.0 Update Services for SAP SolutionsRed Hat · Red Hat Enterprise Linux 9.2 Update Services for SAP SolutionsRed Hat · Red Hat Enterprise Linux 9.4 Extended Update SupportRed Hat · Red Hat Enterprise Linux 9.6 Extended Update Supportpublic PoCs found — 1
githubgithub.com/hakaioffsec/CVE-2026-4802★ 3⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
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References
https://access.redhat.com/errata/RHSA-2026:21390https://access.redhat.com/errata/RHSA-2026:21392https://access.redhat.com/errata/RHSA-2026:21394https://access.redhat.com/errata/RHSA-2026:21395https://access.redhat.com/errata/RHSA-2026:21468https://access.redhat.com/errata/RHSA-2026:21515https://access.redhat.com/errata/RHSA-2026:21516https://access.redhat.com/errata/RHSA-2026:21647https://access.redhat.com/errata/RHSA-2026:21676https://access.redhat.com/errata/RHSA-2026:21700https://access.redhat.com/security/cve/CVE-2026-4802https://bugzilla.redhat.com/show_bug.cgi?id=2451155