{"action":"Upgrade nbconvert to 7.17.1 or later.","affected":[{"fixed":"7.17.1","introduced":"6.5.0"}],"component":"nbconvert","cve_ids":["CVE-2026-39377"],"ecosystem":"PyPI","epss":0.00266,"exploited":false,"fixed_versions":["7.17.1"],"ghsa_id":"GHSA-4c99-qj7h-p3vg","id":"tcs_01M5KGY7EMS693FFD953G0QTSP","modified_at":"2026-07-13T07:15:37.671269225Z","published_at":"2026-04-21T01:16:05.937Z","references":["https://osv.dev/vulnerability/PYSEC-2026-2229","https://github.com/jupyter/nbconvert/releases/tag/v7.17.1","https://github.com/jupyter/nbconvert/security/advisories/GHSA-4c99-qj7h-p3vg"],"severity":{"label":"medium","score":6.5},"sources":[{"source":"osv","source_id":"PYSEC-2026-2229","url":"https://osv.dev/vulnerability/PYSEC-2026-2229"}],"summary":"The nbconvert tool, jupyter nbconvert, converts Jupyter notebooks to various other formats via Jinja templates. Versions 6.5 through 7.17.0 allow arbitrary file writes to locations outside the intende"}