CVE-2026-39866

Lawnchair vulnerable to Command Injection via unquoted workflow dispatch input in release_update.yml

Published Apr 21, 2026 CVSS 4.0 · 7.4 High EPSS 2.3% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Lawnchair
Lawnchair lawnchair
CPEs cpe:2.3:a:lawnchair:lawnchair:*:*:*:*:*:*:*:*
Vendors & Products Lawnchair
Lawnchair lawnchair
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'}

Type Values Removed Values Added
First Time appeared Lawnchairlauncher
Lawnchairlauncher lawnchair
Vendors & Products Lawnchairlauncher
Lawnchairlauncher lawnchair
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
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.
Title Lawnchair vulnerable to Command Injection via unquoted workflow dispatch input in release_update.yml
Weaknesses CWE-77
References
Metrics cvssV4_0

{'score': 7.4, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
GitHub_M
Published
Updated
Apr 25, 2026, 3:55 AM
Reserved
Apr 7, 2026, 7:13 PM
Status
Analyzed
Published
Apr 21, 2026, 2:16 AM
Modified
Oct 26, 2026, 12:10 AM