Vulnerability · Published Apr 21, 2026 · Assigned by GitHub_M
CVE-2026-39866Lawnchair vulnerable to Command Injection via unquoted workflow dispatch input in release_update.yml
High 7.4
In plain English
A high-severity command injection in lawnchair from LawnchairLauncher. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 2.3% (higher than 84% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code.
Severity (CVSS 4.0)7.4High
Exploit odds (30 days)2.3%top 16.2% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack tooling1Public PoC
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| LawnchairLauncher | lawnchair | < fcba413f55dd47f8a3921445252849126c6266b2 |
Weakness: CWE-77 · 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