Command injection via misquoted Docker environment values
Published Oct 25, 2022 · Updated Apr 23, 2025
OS command injection in affected GitHub Actions Runner releases allows remote authenticated users to alter Docker CLI invocations. DockerUtil quotes environment values without escaping embedded quotes or terminal backslashes, so crafted data terminates the -e value and appends Docker options. Exploitation requires a container action, job container, or service container on a Linux runner and attacker-influenced data in an environment variable.
Summary
What happened
OS command injection in affected GitHub Actions Runner releases allows remote authenticated users to alter Docker CLI invocations. DockerUtil quotes environment values without escaping embedded quotes or terminal backslashes, so crafted data terminates the -e value and appends Docker options. Exploitation requires a container action, job container, or service container on a Linux runner and attacker-influenced data in an environment variable.
The record
- CVE
- CVE-2022-39321
- Published
- Oct 25, 2022
- Updated
- Apr 23, 2025
- Vendor
- Product
- GitHub Actions Runner
- Classifications
- CWE-78, T1059
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Oct 25, 2022CVE publishedPublication date reported by the CVE source.
- Apr 23, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=< 2.283.4
- Affected versionversion=>= 2.284.0, < 2.285.2
- Affected versionversion=>= 2.286.0, < 2.289.4
- Affected versionversion=>= 2.290.0, < 2.293.1
- Affected versionversion=>= 2.294.0, < 2.296.2
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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