{"action":"Upgrade werkzeug to 3.1.6 or later.","affected":[{"fixed":"3.1.6","introduced":"0"}],"component":"werkzeug","cve_ids":["CVE-2026-27199"],"ecosystem":"PyPI","epss":0.00631,"exploited":false,"fixed_versions":["3.1.6"],"ghsa_id":"GHSA-29vq-49wr-vm6x","id":"tcs_01M5KGYREM6RVTY2XX5EM9MY8Y","modified_at":"2026-07-13T07:15:48.093424944Z","published_at":"2026-02-21T06:17:00.710Z","references":["https://osv.dev/vulnerability/PYSEC-2026-2320","https://github.com/pallets/werkzeug/releases/tag/3.1.6","https://github.com/pallets/werkzeug/security/advisories/GHSA-29vq-49wr-vm6x","https://github.com/pallets/werkzeug/commit/f407712fdc60a09c2b3f4fe7db557703e5d9338d"],"severity":{"label":"medium","score":5.3},"sources":[{"source":"osv","source_id":"PYSEC-2026-2320","url":"https://osv.dev/vulnerability/PYSEC-2026-2320"}],"summary":"Werkzeug is a comprehensive WSGI web application library. Versions 3.1.5 and below, the safe_join function allows Windows device names as filenames if preceded by other path segments. This was previou"}