{"action":"Upgrade jupyterlab to 4.5.7 or later.","affected":[{"fixed":"4.5.7","introduced":"0"}],"component":"jupyterlab","cve_ids":["CVE-2026-40171"],"ecosystem":"PyPI","epss":0.00476,"exploited":false,"fixed_versions":["4.5.7"],"ghsa_id":"GHSA-rch3-82jr-f9w9","id":"tcs_01M5KH02BP2JKV943N7ZMBYH48","modified_at":"2026-07-13T16:42:47.886298772Z","published_at":"2026-07-13T15:02:55.776849Z","references":["https://osv.dev/vulnerability/PYSEC-2026-2538","https://github.com/jupyter/notebook/security/advisories/GHSA-rch3-82jr-f9w9","https://nvd.nist.gov/vuln/detail/CVE-2026-40171","https://github.com/jupyter/notebook","https://jupyterlab.readthedocs.io/en/latest/user/commands.html#commands-in-markdown-output-and-files","https://pypi.org/project/jupyterlab","https://github.com/advisories/GHSA-rch3-82jr-f9w9"],"severity":{"label":"high","score":8.4},"sources":[{"source":"osv","source_id":"PYSEC-2026-2538","url":"https://osv.dev/vulnerability/PYSEC-2026-2538"},{"source":"nvd","source_id":"CVE-2026-40171","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-40171"}],"summary":"Jupyter Notebook Vulnerable to Authentication Token Theft via CommandLinker XSS"}