CVE-2026-39866

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.

CVSS v4.0

7.4 HIGHCVSS: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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CVSS v3.1

8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS

2.35% chance of exploitation in the next 30 days, 82th percentile

Published

2026-04-21

Updated

2026-04-25

Proof-of-concept exploits (1)

• abhayclasher/CVE-2026-398660★ · 2026-04-11

References

• CVE Record
• NVD entry

Related

• CVE-2026-39859
• CVE-2026-3988
• CVE-2026-39858
• CVE-2026-39885
• CVE-2026-39846
• CVE-2026-39888