{"action":"Upgrade nbconvert to 7.17.1 or later.","affected":[{"fixed":"7.17.1","introduced":"6.5.0"}],"component":"nbconvert","cve_ids":["CVE-2026-39378"],"ecosystem":"PyPI","epss":0.00457,"exploited":false,"fixed_versions":["7.17.1"],"ghsa_id":"GHSA-7jqv-fw35-gmx9","id":"tcs_01M5KGY7RER8PX9FTC9S5JC58C","modified_at":"2026-07-13T07:15:37.724478345Z","published_at":"2026-04-21T01:16:06.073Z","references":["https://osv.dev/vulnerability/PYSEC-2026-2230","https://github.com/jupyter/nbconvert/releases/tag/v7.17.1","https://github.com/jupyter/nbconvert/security/advisories/GHSA-7jqv-fw35-gmx9"],"severity":{"label":"medium","score":6.5},"sources":[{"source":"osv","source_id":"PYSEC-2026-2230","url":"https://osv.dev/vulnerability/PYSEC-2026-2230"}],"summary":"The nbconvert tool, jupyter nbconvert, converts Jupyter notebooks to various other formats via Jinja templates. In versions 6.5 through 7.17.0, when `HTMLExporter.embed_images=True`, nbconvert's markd"}