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Vulnerabilities

Vulnerability · CVE-2026-39866

Lawnchair is a free, open-source home app for Android.

Published Apr 21, 2026 · catalog updated Jun 17, 2026 · Lawnchair is a free,

Check if you run it

No confirmed exploitation is on record for CVE-2026-39866. EPSS is 2.96%. Act only if a listed version of Lawnchair is a free, is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (Lawnchair is a free,).
  • No version range is stored. A customer cannot check an installed version against this record.
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High7.4
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
2.96%
Remediation
Advisory link
Affected products
cpe lawnchair/lawnchair

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe lawnchair/lawnchairversion unspecified

How to fix CVE-2026-39866

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-39866. EPSS is 2.96%. Act only if a listed version of Lawnchair is a free, is installed.

Which versions are affected?

Affected version ranges are not on this record. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-77: Command Injection. EPSS 2.96%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Apr 21, 2026 · NIST NVD

    Detected

    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.

  2. Jun 17, 2026 · NIST NVD

    Updated

    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.

Sources

  • CVE.orgVulnerability recordCVE-2026-39866

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-39866

    30-day exploitation probability 3.0%

    first.org
  • NIST NVDVulnerability recordCVE-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.

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.