PyPI/notebook CVE-2026-42557: critical 9.6, EPSS 0.37%
JupyterLab's command linker attributes in HTML enable one-click command execution from untrusted content
Action: Upgrade notebook to 7.5.6 or later.
pip install notebook==7.5.6Affected
| introduced | fixed | last affected |
|---|---|---|
| 7.0.0 | 7.5.6 | - |
Fixed versions
| 7.5.6 |
Sources
- osv: PYSEC-2026-2681
- https://github.com/jupyterlab/jupyterlab/security/advisories/GHSA-mqcg-5x36-vfcg
- https://nvd.nist.gov/vuln/detail/CVE-2026-42557
- https://github.com/jupyterlab/jupyterlab
- https://jupyterlab.readthedocs.io/en/latest/user/commands.html#commands-in-markdown-files
- https://pypi.org/project/notebook
- https://github.com/advisories/GHSA-mqcg-5x36-vfcg
CVE-2026-42557 · published · modified · JSON