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    CVE-2026-4802

    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.

    Published:May 11, 2026
    Last Modified:May 28, 2026
    EPS:May 11, 2026
    EPSS Score:0.0027
    CVSS Score:8

    Affected Products

    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Redhat
    Product
    Enterprise Linux Eus
    Vendor
    Redhat
    Product
    Rhel Aus
    Vendor
    Redhat
    Product
    Rhel E4s
    Vendor
    Redhat
    Product
    Rhel Eus
    Vendor
    Redhat
    Product
    Rhel Tus

    Exploits

    https://github.com/hakaioffsec/CVE-2026-4802

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    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
    https://bugzilla.redhat.com/show_bug.cgi?id=2451155
    https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-4802.json

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High