CVE-2026-4802
What it is
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.
At a glance
- Exploitability
- Can be exploited over the network with a low-privilege account, but needs a user to act. High risk of data exposure, data tampering, service disruption.
- Exploit odds
- 1.0% chance of exploitation in the next 30 days (EPSS).
- Fix
- No patch or advisory is linked yet. Look at mitigations or restrict exposure.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Details
- Published
- Last modified
- Exploit probability
- 1.0% · EPSS, next 30 days
- Weakness
- CWE-78 · OS command injection
- Record status
- Awaiting Analysis
Attack profile CVSS 3.1 · 8.0
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Raw vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
References
- https://access.redhat.com/errata/RHSA-2026:21390
- https://access.redhat.com/errata/RHSA-2026:21392
- https://access.redhat.com/errata/RHSA-2026:21394
- https://access.redhat.com/errata/RHSA-2026:21395
- https://access.redhat.com/errata/RHSA-2026:21468
- https://access.redhat.com/errata/RHSA-2026:21515
- https://access.redhat.com/errata/RHSA-2026:21516
- https://access.redhat.com/errata/RHSA-2026:21647
- https://access.redhat.com/errata/RHSA-2026:21676
- https://access.redhat.com/errata/RHSA-2026:21700
- https://access.redhat.com/security/cve/CVE-2026-4802
- https://bugzilla.redhat.com/show_bug.cgi?id=2451155
- 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://access.redhat.com/errata/RHSA-2026:21390
- https://access.redhat.com/errata/RHSA-2026:21392
- https://access.redhat.com/errata/RHSA-2026:21394
- https://access.redhat.com/errata/RHSA-2026:21395
- https://access.redhat.com/errata/RHSA-2026:21468
- https://access.redhat.com/errata/RHSA-2026:21515
- https://access.redhat.com/errata/RHSA-2026:21516
- https://access.redhat.com/errata/RHSA-2026:21647
- https://access.redhat.com/errata/RHSA-2026:21676
- https://access.redhat.com/errata/RHSA-2026:21700
- https://access.redhat.com/security/cve/CVE-2026-4802