CVE-2026-39866CWE-77

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

High · published April 21, 2026

CVSS v4.0
7.4
EPSS
3%
Percentile
87.1
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
7.4 · HIGH
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
EPSS
0.02955 · 87.1th percentile
Weakness
CWE-77 · Improper Neutralization of Special Elements used in a Command ('Command Injection')
Published
2026-04-21T01:19Z
EPSS history
Timeline
  • 21 APR 01:19Z
    Lawnchair vulnerable to Command Injection via unquoted workflow dispatch input in release_update.yml
    cvelistv5