{"action":"Upgrade nicegui to 3.10.0 or later.","affected":[{"fixed":"3.10.0","introduced":"0"}],"component":"nicegui","cve_ids":["CVE-2026-39844"],"ecosystem":"PyPI","epss":0.00385,"exploited":false,"fixed_versions":["3.10.0"],"ghsa_id":"GHSA-w8wv-vfpc-hw2w","id":"tcs_01M5KGY8BRQ0HG6KYZHX067YVE","modified_at":"2026-07-13T07:15:35.271485695Z","published_at":"2026-04-08T21:16:59.883Z","references":["https://osv.dev/vulnerability/PYSEC-2026-2234","https://github.com/zauberzeug/nicegui/releases/tag/v3.10.0","https://github.com/zauberzeug/nicegui/security/advisories/GHSA-w8wv-vfpc-hw2w","https://github.com/zauberzeug/nicegui/commit/d38a702e3af2da5b0708f689be8d71413fc77056"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"PYSEC-2026-2234","url":"https://osv.dev/vulnerability/PYSEC-2026-2234"}],"summary":"NiceGUI is a Python-based UI framework. Prior to 3.10.0, Since PurePosixPath only recognizes forward slashes (/) as path separators, an attacker can bypass this sanitization on Windows by using backsl"}