{"action":"Upgrade marimo to 0.23.9 or later.","affected":[{"fixed":"0.23.9","introduced":"0"}],"component":"marimo","cve_ids":["CVE-2026-54386"],"ecosystem":"PyPI","epss":0.00239,"exploited":false,"fixed_versions":["0.23.9"],"ghsa_id":"GHSA-8m59-7xv8-735h","id":"tcs_01M5KH0HQ22F0GTYEE914CKX98","modified_at":"2026-07-13T16:32:12.434722819Z","published_at":"2026-07-13T15:46:20.417782Z","references":["https://osv.dev/vulnerability/PYSEC-2026-2619","https://nvd.nist.gov/vuln/detail/CVE-2026-54386","https://github.com/marimo-team/marimo/pull/9789","https://github.com/marimo-team/marimo/commit/fdd55c8cf6260ae23bb411dc9d9269def5cf75d6","https://github.com/marimo-team/marimo","https://github.com/marimo-team/marimo/releases/tag/0.23.9","https://www.vulncheck.com/advisories/marimo-xss-via-file-query-parameter-in-assets-py","https://pypi.org/project/marimo","https://github.com/advisories/GHSA-8m59-7xv8-735h"],"severity":{"label":"medium","score":6.1},"sources":[{"source":"osv","source_id":"PYSEC-2026-2619","url":"https://osv.dev/vulnerability/PYSEC-2026-2619"}],"summary":"marimo contains a reflected cross-site scripting vulnerability in the notebook page"}