{"action":"Upgrade briefcase to 0.3.26 or later.","affected":[{"fixed":"0.3.26","introduced":"0.3.0"}],"component":"briefcase","cve_ids":["CVE-2026-33430"],"ecosystem":"PyPI","epss":0.00137,"exploited":false,"fixed_versions":["0.3.26"],"ghsa_id":"GHSA-r3r2-35v9-v238","id":"tcs_01M5KH10WC0FP26GWK9R8WGNY2","modified_at":"2026-05-20T09:18:53.838122Z","published_at":"2026-03-26T17:16:38.713Z","references":["https://osv.dev/vulnerability/PYSEC-2026-27","https://github.com/beeware/briefcase/issues/2759","https://github.com/beeware/briefcase-windows-VisualStudio-template/pull/85","https://github.com/beeware/briefcase-windows-app-template/pull/86","https://github.com/beeware/briefcase/security/advisories/GHSA-r3r2-35v9-v238"],"severity":{"label":"high","score":7.3},"sources":[{"source":"osv","source_id":"PYSEC-2026-27","url":"https://osv.dev/vulnerability/PYSEC-2026-27"}],"summary":"Briefcase is a tool for converting a Python project into a standalone native application. Starting in version 0.3.0 and prior to version 0.3.26, if a developer uses Briefcase to produce an Windows MSI"}