High8.0Red Hat & Ubuntu Linux
Arbitrary command execution via crafted links in system logs UI
CVE-2026-4802 Published May 11, 2026
CVE-2026-4802
Affected products & platforms
Red Hat & Ubuntu LinuxUnclassified
Summary
Arbitrary command execution via crafted links in system logs UI. Red Hat rates this important (CVSS 8). Weakness: CWE-78. Affected package(s): cockpit. Resolved in Red Hat advisory RHSA-2026:21390 — update the affected packages (`sudo dnf update`).
Affected versions
- cockpit-0:334.2-1.el10_0
- cockpit-0:310.8-1.el8_10
- cockpit-0:356.2-1.el9_8
- cockpit-0:334.3-1.el9_6
- cockpit-0:311.3-1.el9_4
- cockpit-0:264.3-1.el8_6
- cockpit-0:356.2-1.el10_2
- cockpit-0:264.3-1.el9_0
- cockpit-0:286.3-1.el9_2
- cockpit-0:286.2-1.el8_8
Official advisory · high-confidence parse· fetched 4 hours ago·verify at source
Fixed versions
- RHSA-2026:21390
Official advisory · high-confidence parse· fetched 4 hours ago·verify at source
Mitigation checklist
Recommended fix / mitigation
- Update the affected package(s) to the fixed version shipped in RHSA-2026:21390 (`sudo dnf update` / `yum update`).
Official advisory · high-confidence parse· fetched 4 hours ago·verify at source
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