CVE-2026-106056: Command Injection (CVSS 7.5)

Description

Rundeck before 6.2.0 contains an OS command injection vulnerability that allows authenticated users with job run permission to execute commands on Windows nodes by supplying crafted option values. Attackers can inject cmd.exe metacharacters such as && or | into free-text options, which CLIUtils.quoteWindowsCMDArg wraps in ineffective single quotes, running commands with node executor credential privileges.

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CVSS v3.1 Score

7.5

HIGH

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

Weakness Type (CWE)

CWE-78 OS Command Injection

References

Other References

https://github.com/rundeck/rundeck https://github.com/rundeck/rundeck/blob/v6.1.0/core/src/main/java/com/dtolabs/rundeck/core/cli/CLIUtils.java#L146-L158 https://github.com/rundeck/rundeck/commit/807d9cf0eef63669b342e02e05a740e97f84f013 https://github.com/rundeck/rundeck/pull/10414 https://github.com/rundeck/rundeck/releases/tag/v6.2.0 https://www.vulncheck.com/advisories/rundeck-before-6.2.0-os-command-injection-via-windows-job-option-quoting

Frequently Asked Questions

What is CVE-2026-106056? +

Rundeck before 6.2.0 contains an OS command injection vulnerability that allows authenticated users with job run permission to execute commands on Windows nodes by supplying crafted option values. Attackers can inject cmd.exe metacharacters such as && or | into free-text options, which CLIUtils.quoteWindowsCMDArg wraps in ineffective single quotes, running commands with node executor credential privileges. It has a CVSS v3.1 base score of 7.5 (HIGH).

How severe is CVE-2026-106056? +

CVE-2026-106056 has a CVSS v3.1 score of 7.5 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

How do I check if I'm vulnerable to CVE-2026-106056? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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