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CVE Record

CVE-2026-4802: Cockpit: cockpit: arbitrary command execution via crafted links in system logs ui

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.

HighCVSS 8Not KEV-listedUpdated
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Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

Cockpit, the web-based Linux management interface, can execute unintended shell commands when a logged-in user interacts with crafted links in the system logs UI. Successful exploitation could compromise the host. The issue is high severity because it affects confidentiality, integrity, and availability, but it requires privileges and user interaction.

Executive priority

Patch on an accelerated schedule, especially for management hosts. The vulnerability can lead to full host compromise, but current source evidence does not support emergency treatment based on active exploitation.

Technical view

CVE-2026-4802 is CWE-78 command injection in Cockpit logsJournal UI handling. Unsanitized user-controlled link parameters can include shell metacharacters or command substitutions that reach command execution on the host. CVSS 3.1 is 8.0 with network vector, low complexity, low privileges required, and user interaction required.

Likely exposure

Exposure is most likely on Red Hat Enterprise Linux 8, 9, and 10 systems running affected cockpit package streams listed by Red Hat. RHEL 7 is listed as unaffected. Internet-facing or broadly reachable Cockpit management interfaces raise operational risk.

Exploitation context

The bundle does not show CISA KEV listing or cited active exploitation. Exploitation is described as remote, but requires low privileges and user interaction. Treat crafted links in Cockpit system logs as the relevant risk path without assuming public weaponization.

Researcher notes

Key constraints are PR:L and UI:R. Focus validation on Cockpit logs UI link handling, affected Red Hat package streams, and vendor advisory coverage. Do not assume non-Red Hat distributions or unrelated Cockpit versions are affected from this bundle alone.

Mitigation direction

  • Apply the applicable Red Hat RHSA cockpit updates for each affected RHEL stream.
  • Prioritize hosts where Cockpit is enabled and reachable by administrators or operators.
  • For delayed patching, check Red Hat guidance or support for supported workarounds.
  • Retire or isolate affected streams that cannot receive the relevant security advisory updates.

Validation and detection

  • Inventory RHEL 8, 9, and 10 hosts with the cockpit package installed.
  • Map package versions against the affected versions listed in the CVE bundle.
  • Confirm patched hosts received the applicable RHSA advisory update.
  • Verify RHEL 7 systems are not incorrectly included as affected.
  • Recheck Red Hat CVE and errata pages for updated status before closure.
Prepared
Confidence
high
Sources
12

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.

cwe · medium confidence lookup

CWE-78: Command execution behavior lookup

Command injection weaknesses can lead defenders to review execution techniques and command interpreter telemetry. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.

Open ATT&CK lookup
cve · low confidence lookup

CVE-2026-4802 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

Open ATT&CK lookup
Vulnerability profileCVE Program record
Severity
High
CVSS
8 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

2CVSS vectors
7Timeline events
3ADP providers
15Source links

SSVC decision data

CISA-ADPCISA Coordinator
Timestamp
Version
2.0.3
Exploitation: noneAutomatable: noTechnical Impact: total

CVSS vector scores

2 official scores

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
8CVSS 3.1HighCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H2.15.9redhat
8CVSS 3.1HighCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H2.15.9redhat-SADP

Vulnerability scoring details

Base CVSS 3.1 score

8High
CVSS 3.1 vector shape for CVE-2026-4802Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

  1. ADP timelineredhat-SADP

    Reported to Red Hat.

  2. Source timelineredhat

    Reported to Red Hat.

  3. CVE reservedCVE Program

    The CVE ID was reserved by the assigning CNA.

  4. ADP timelineredhat-SADP

    Made public.

  5. Source timelineredhat

    Made public.

  6. CVE publishedCVE Program

    The CVE record was published.

  7. CVE updatedCVE Program

    The CVE record metadata indicates this as the latest update time.

ADP provider summaries

CISA-ADPCISA ADP Vulnrichment
other:ssvc
CVECVE Program Container
redhat-SADPcockpit: Cockpit: Arbitrary command execution via crafted links in system logs UI
other:Red Hat severity ratingcvssV3_1
  • 2026-03-25T10:32:01.264Z: Reported to Red Hat.
  • 2026-05-11T12:34:26.148Z: Made public.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
Red HatRed Hat Enterprise Linux 10cockpit, 0:356.2-1.el10_2affected
Red HatRed Hat Enterprise Linux 10.0 Extended Update Supportcockpit, 0:334.2-1.el10_0affected
Red HatRed Hat Enterprise Linux 8cockpit, 0:310.8-1.el8_10affected
Red HatRed Hat Enterprise Linux 8.6 Advanced Mission Critical Update Supportcockpit, 0:264.3-1.el8_6affected
Red HatRed Hat Enterprise Linux 8.6 Telecommunications Update Servicecockpit, 0:264.3-1.el8_6affected
Red HatRed Hat Enterprise Linux 8.6 Update Services for SAP Solutionscockpit, 0:264.3-1.el8_6affected
Red HatRed Hat Enterprise Linux 8.8 Telecommunications Update Servicecockpit, 0:286.2-1.el8_8affected
Red HatRed Hat Enterprise Linux 8.8 Update Services for SAP Solutionscockpit, 0:286.2-1.el8_8affected
Red HatRed Hat Enterprise Linux 9cockpit, 0:356.2-1.el9_8affected
Red HatRed Hat Enterprise Linux 9cockpit, 0:356.2-1.el9_8affected
Red HatRed Hat Enterprise Linux 9.0 Update Services for SAP Solutionscockpit, 0:264.3-1.el9_0affected
Red HatRed Hat Enterprise Linux 9.2 Update Services for SAP Solutionscockpit, 0:286.3-1.el9_2affected
Red HatRed Hat Enterprise Linux 9.4 Extended Update Supportcockpit, 0:311.3-1.el9_4affected
Red HatRed Hat Enterprise Linux 9.6 Extended Update Supportcockpit, 0:334.3-1.el9_6affected
Red HatRed Hat Enterprise Linux 7cockpitunaffected
Weakness

CWE details

CWE-78

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.