CVE-2026-4802

Cockpit: cockpit: arbitrary command execution via crafted links in system logs ui

State: Published
Severity: 8.0 High
Published: May 11, 2026
Updated: Jul 15, 2026
Reserved: Mar 25, 2026

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.

Scores

CVSS	Score	Vector	Source
3.1	8.0 High	CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H	redhat
3.1	8.0 High	CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H	redhat-SADP

Weaknesses

CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

Affected Products

Product	Versions
Red Hat Enterprise Linux 10Red Hat	0:356.2-1.el10_2 and laterNot affected
Red Hat Enterprise Linux 10.0 Extended Update SupportRed Hat	0:334.2-1.el10_0 and laterNot affected
Red Hat Enterprise Linux 8Red Hat	0:310.8-1.el8_10 and laterNot affected
Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update SupportRed Hat	0:264.3-1.el8_6 and laterNot affected
Red Hat Enterprise Linux 8.6 Telecommunications Update ServiceRed Hat	0:264.3-1.el8_6 and laterNot affected
Red Hat Enterprise Linux 8.6 Update Services for SAP SolutionsRed Hat	0:264.3-1.el8_6 and laterNot affected
Red Hat Enterprise Linux 8.8 Telecommunications Update ServiceRed Hat	0:286.2-1.el8_8 and laterNot affected
Red Hat Enterprise Linux 8.8 Update Services for SAP SolutionsRed Hat	0:286.2-1.el8_8 and laterNot affected
Red Hat Enterprise Linux 9Red Hat	0:356.2-1.el9_8 and laterNot affected
Red Hat Enterprise Linux 9Red Hat	0:356.2-1.el9_8 and laterNot affected
Red Hat Enterprise Linux 9.0 Update Services for SAP SolutionsRed Hat	0:264.3-1.el9_0 and laterNot affected
Red Hat Enterprise Linux 9.2 Update Services for SAP SolutionsRed Hat	0:286.3-1.el9_2 and laterNot affected
Red Hat Enterprise Linux 9.4 Extended Update SupportRed Hat	0:311.3-1.el9_4 and laterNot affected
Red Hat Enterprise Linux 9.6 Extended Update SupportRed Hat	0:334.3-1.el9_6 and laterNot affected
Red Hat Enterprise Linux 7Red Hat

References

RHSA-2026:21390vendor-advisory
RHSA-2026:21392vendor-advisory
RHSA-2026:21394vendor-advisory
RHSA-2026:21395vendor-advisory
RHSA-2026:21468vendor-advisory
RHSA-2026:21515vendor-advisory
RHSA-2026:21516vendor-advisory
RHSA-2026:21647vendor-advisory
RHSA-2026:21676vendor-advisory
RHSA-2026:21700vendor-advisory
https://access.redhat.com/security/cve/CVE-2026-4802vdb-entry
RHBZ#2451155issue-tracking
https://github.com/cockpit-project/cockpit/blob/e204cd130/pkg/systemd/logsJournal.jsx#L206-L210
http://www.openwall.com/lists/oss-security/2026/05/20/19
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-4802.json

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