CVE-2026-39866 Details
Description
Lawnchair is a free, open-source home app for Android. Prior to commit fcba413f55dd47f8a3921445252849126c6266b2, command injection in release_update.yml workflow dispatch input allows arbitrary code execution. Commit fcba413f55dd47f8a3921445252849126c6266b2 patches the issue.
A command injection vulnerability has been identified in the Lawnchair Android launcher, specifically within the release_update.yml GitHub Actions workflow. This issue, present in versions prior to a recent patch, allows for arbitrary code execution by exploiting unquoted user input in the workflow dispatch. The vulnerability arises because the workflow directly incorporates input from the artifactName parameter into a shell command without proper sanitization, creating an opportunity for command injection.
Users are advised to update to the latest version of Lawnchair, where this vulnerability has been patched.
Metrics
CVSS 4.0 Severity and Vector Strings:
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Apr 22, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/LawnchairLauncher/lawnchair/security/advisories/GHSA-9prc-pp2c-3427 | CISA-ADP | ExploitVendor Advisory |
| https://github.com/LawnchairLauncher/lawnchair/commit/fcba413f55dd47f8a3921445252849126c6266b2 | [email protected] | Patch |
| https://github.com/LawnchairLauncher/lawnchair/security/advisories/GHSA-9prc-pp2c-3427 | [email protected] | ExploitVendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-77 | Improper Neutralization of Special Elements used in a Command ('Command Injection') | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| lawnchair lawnchair | <= 15.0.0 |
CPE
Remediation
| |
Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Apr 23, 2026 | Initial Analysis | [email protected] |
| Apr 21, 2026 | CVE Modified | CISA-ADP |
| Apr 21, 2026 | New CVE Received | [email protected] |