Cockpit System Logs UI Command Injection Vulnerability

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.

Casky was already ahead

This CVE exploits attack patterns that Casky's 419matched skills already investigate — long before this vulnerability was disclosed. Claude's reasoning model maps these techniques to MITRE ATT&CK, so practitioners who ran these skills have already seen the threat behaviour in their findings.

Analysis

CVE-2026-4802 represents a critical command injection vulnerability in Cockpit's system logs user interface where unsanitized user-controlled parameters in crafted links allow remote attackers to execute arbitrary shell commands. This vulnerability carries a CVSS score of 8 and poses a severe risk because it requires no authentication—an attacker can simply craft a malicious link and trick an administrator into clicking it. Organizations running Cockpit for remote system management are particularly vulnerable, as successful exploitation results in complete system compromise with the privileges of the Cockpit process, potentially granting root-level access depending on deployment configuration.

Casky's 419 matching skills leverage Claude AI's extended reasoning to identify the attack chain across three MITRE ATT&CK phases: Initial Access (TA0001) through social engineering of the malicious link, Execution (TA0002) via the shell metacharacter injection, and Command and Control (TA0043) for post-exploitation activities. Practitioners using Casky would observe detection patterns highlighting unsanitized parameter handling in web logs, shell metacharacter sequences (backticks, $(), pipes, semicolons) appearing in HTTP request parameters, and subsequent unexpected child process spawning from the Cockpit service. The platform's skill mapping would correlate these indicators across CWE-78 (Improper Neutralization of Special Elements used in an OS Command), enabling security teams to pinpoint vulnerable endpoints before exploitation and prioritize patching across their Cockpit deployments.

Live Threat IntelligenceComing soon

Casky Risk Score

—

EPSS Probability

—

Shodan Exposure

—

GreyNoise Signal

—

Composite risk scoring from EPSS, CISA KEV, Shodan, and GreyNoise — 21 security APIs correlated into a single Casky Risk Score. Coming in Casky Pro. Join early access →

419 Casky skills cover this attack pattern

These skills use Claude AI's reasoning model to surface findings in the same attack categories as CVE-2026-4802.

analyzing-android-malware-with-apktool

malware analysis · medium

Run

analyzing-apt-group-with-mitre-navigator

threat intelligence · low

Run

analyzing-bootkit-and-rootkit-samples

malware analysis · medium

Run

MITRE ATT&CK Techniques

TA0001 TA0043 TA0002

Investigate the attack patterns behind CVE-2026-4802

Casky has 419 skills that investigate the attack patterns behind CVE-2026-4802. Run one and get CVSS-scored findings in 3 minutes.

Run the skill that detects this →

X Instagram LinkedIn