Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') in Red Hat Red Hat Enterprise Linux 10 (CVE-2026-4802)
CVE-2026-4802 is a high-severity vulnerability in Cockpit on Red Hat Enterprise Linux 10 and 9.6 Extended Update Support versions. It allows remote attackers to achieve arbitrary command execution on the host by injecting shell metacharacters via crafted links in the system logs UI. This flaw could lead to complete system compromise. Red Hat has released security updates to fix this issue in Cockpit packages for affected versions.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-4802) in Cockpit, a web-based server administration tool, arises from improper neutralization of special elements used in OS commands (CWE-78). Unsanitized user-controlled parameters in crafted links within the system logs UI allow remote attackers to inject shell metacharacters and command substitutions, resulting in arbitrary shell command execution on the affected system. The vulnerability affects Red Hat Enterprise Linux 10.0 and 9.6 Extended Update Support versions across multiple architectures (x86_64, s390x, ppc64le, aarch64). Red Hat has issued security advisories RHSA-2026:21390 and RHSA-2026:21392 providing updated Cockpit packages that address this issue.
Potential Impact
Successful exploitation enables remote attackers with limited privileges to execute arbitrary shell commands on the host system via the Cockpit system logs UI. This can lead to full system compromise, including confidentiality, integrity, and availability impacts. The CVSS v3.1 base score is 8.0 (High), reflecting network attack vector, low attack complexity, required privileges, user interaction, and high impact on confidentiality, integrity, and availability.
Mitigation Recommendations
Red Hat has released official security updates that fix this vulnerability. Users should apply the updated Cockpit packages provided in advisories RHSA-2026:21390 (for RHEL 10.0 EUS) and RHSA-2026:21392 (for RHEL 9.6 EUS) as soon as possible. Detailed update instructions are available at https://access.redhat.com/articles/11258. No additional mitigations are specified by the vendor beyond applying these patches.
Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') in Red Hat Red Hat Enterprise Linux 10 (CVE-2026-4802)
Description
CVE-2026-4802 is a high-severity vulnerability in Cockpit on Red Hat Enterprise Linux 10 and 9.6 Extended Update Support versions. It allows remote attackers to achieve arbitrary command execution on the host by injecting shell metacharacters via crafted links in the system logs UI. This flaw could lead to complete system compromise. Red Hat has released security updates to fix this issue in Cockpit packages for affected versions.
CVSS v3.1
Score 8.0high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-4802) in Cockpit, a web-based server administration tool, arises from improper neutralization of special elements used in OS commands (CWE-78). Unsanitized user-controlled parameters in crafted links within the system logs UI allow remote attackers to inject shell metacharacters and command substitutions, resulting in arbitrary shell command execution on the affected system. The vulnerability affects Red Hat Enterprise Linux 10.0 and 9.6 Extended Update Support versions across multiple architectures (x86_64, s390x, ppc64le, aarch64). Red Hat has issued security advisories RHSA-2026:21390 and RHSA-2026:21392 providing updated Cockpit packages that address this issue.
Potential Impact
Successful exploitation enables remote attackers with limited privileges to execute arbitrary shell commands on the host system via the Cockpit system logs UI. This can lead to full system compromise, including confidentiality, integrity, and availability impacts. The CVSS v3.1 base score is 8.0 (High), reflecting network attack vector, low attack complexity, required privileges, user interaction, and high impact on confidentiality, integrity, and availability.
Mitigation Recommendations
Red Hat has released official security updates that fix this vulnerability. Users should apply the updated Cockpit packages provided in advisories RHSA-2026:21390 (for RHEL 10.0 EUS) and RHSA-2026:21392 (for RHEL 9.6 EUS) as soon as possible. Detailed update instructions are available at https://access.redhat.com/articles/11258. No additional mitigations are specified by the vendor beyond applying these patches.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:21394
- Cve Count
- 1
- Additional Cves
- []
- Cvss Version
- null
Threat ID: 6a175ed4e29bf47b50ed8f33
Added to database: 05/27/2026, 21:15:00 UTC
Last enriched: 07/15/2026, 15:32:35 UTC
Last updated: 07/31/2026, 19:22:59 UTC
Views: 59
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